Toughest Networking Trivia Questions Quiz! Practice Test

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  • 1/126 Questions

    How many functional layers are in the OSI protocol model?

    • 4
    • 5
    • 6
    • 7
    • 8
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About This Quiz

Below is the toughest networking trivia questions quiz that is perfectly designed for all those who think that they know all there is to networking. Do give it a shot and get to see how well you informed are and what you are yet to learn about networking. All the best, and keep an eye out for more quizzes just like it!

Toughest Networking Trivia Questions Quiz! Practice Test - Quiz

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  • 2. 
    Referring to the IPv4 adapter configuration presented in the above image, what type of IPv4 the address will be assigned to the network adapter (static or dynamic)? Note: a static address is entered manually while the dynamic is obtained automatically via DHCP. - ProProfs

    Referring to the IPv4 adapter configuration presented in the above image, what type of IPv4 the address will be assigned to the network adapter (static or dynamic)? Note: a static address is entered manually while the dynamic is obtained automatically via DHCP.

    Explanation
    Based on the information provided, the IPv4 address assigned to the network adapter will be dynamic. This is because dynamic addresses are obtained automatically through DHCP, which stands for Dynamic Host Configuration Protocol. In contrast, static addresses are manually entered. Since the question does not mention any manual input, it can be inferred that the address will be obtained automatically.

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  • 3. 

    What is the process of enclosing a block of data in a protocol header and trailer called?

    • De-encapsulation

    • Decapsulation

    • Segmentation

    • Encapsulation

    • Registration

    Correct Answer
    A. Encapsulation
    Explanation
    Encapsulation is the process of enclosing a block of data in a protocol header and trailer. This is done to ensure that the data can be transmitted over a network or communication channel. By encapsulating the data, it becomes organized and structured, allowing it to be properly interpreted and understood by the receiving end. Encapsulation also adds necessary information such as source and destination addresses, error checking, and other control information to the data, making it more reliable and secure during transmission.

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  • 4. 

    Which Protocol is Connection-Oriented?

    • TCP

    • UDP

    • TLTP

    • FTP

    Correct Answer
    A. TCP
    Explanation
    TCP (Transmission Control Protocol) is a connection-oriented protocol. It establishes a reliable, error-checked, and ordered communication channel between two devices before data transmission. TCP ensures that all sent packets are received and arranges them in the correct order. It also handles congestion control and flow control to optimize the data transfer process. UDP (User Datagram Protocol), on the other hand, is a connectionless protocol that does not establish a dedicated channel before transmission, making it faster but less reliable. TLTP and FTP are not widely recognized protocols, making TCP the correct answer.

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  • 5. 

    What is Encapsulation?

    • It is the process of adding a protocol header and sometimes a trailer to a block of application data.

    • It is the process of removing the data portion of the PDU and passing it up to the next higher layer.

    • It is the process of obtaining a MAC addresses which corresponds to a given IP address.

    • It is the process of obtaining an IP addresses which corresponds to a given MAC address

    Correct Answer
    A. It is the process of adding a protocol header and sometimes a trailer to a block of application data.
  • 6. 

    An IPv4 address has how many octets?

    Correct Answer
    4
    Explanation
    An IPv4 address is made up of four octets. Each octet consists of 8 bits, allowing for a total of 32 bits in an IPv4 address. The four octets are separated by periods, and each octet can have a value ranging from 0 to 255. This format allows for a unique identification of devices connected to a network using IPv4 addressing scheme.

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  • 7. 

    From a command prompt window, you can determine the current network settings for your PC. Which of the following commands will display the IP addresses assigned to each NIC on your Windows laptop?

    • Ipconfig

    • Ipconfig /showdns

    • Netstat -r

    Correct Answer
    A. Ipconfig
    Explanation
    The correct answer is "ipconfig". By running the "ipconfig" command in a command prompt window, you can view the current network settings for your PC, including the IP addresses assigned to each NIC (Network Interface Card) on your Windows laptop. This command provides detailed information about the IP configuration, subnet mask, default gateway, and other network settings for all active network interfaces on your computer.

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  • 8. 

    What is Message Segmentation?

    • Segmentation is the process of breaking the application data stream into pieces or blocks of data

    • Segmentation is the process where devices communicate in both directions at the same time.

    • Segmentation is the process which allows data to be delivered to a destination on a different network.

    • Segmentation allows a server to determine which service the data should be directed to.

    Correct Answer
    A. Segmentation is the process of breaking the application data stream into pieces or blocks of data
  • 9. 

    What happens to an incoming frame if the Switch doesn't have an entry for the Destination Address in its MAC Address Table? 

    • The frame is sent out all ports except the ingress port (original incoming port) 

    • Switches populate the MAC Address Table by observing the Source MAC Address of all incoming frames. 

    • The switch sends an ARP request and the device with the destination MAC address responds. 

    • The frame is sent out all ports in an attempt to reach the destination device. 

    • The frame is dropped until it learns the correct port from the source address of an incoming frame. 

    Correct Answer
    A. The frame is sent out all ports except the ingress port (original incoming port) 
    Explanation
    When a switch doesn't have an entry for the Destination Address in its MAC Address Table, it means that the switch doesn't know the port to which the frame should be forwarded. In this case, the switch will flood the frame out of all ports except the one it came from (the ingress port) in an attempt to reach the destination device. This is because flooding ensures that the frame reaches the correct destination, even if the switch doesn't have the necessary information in its MAC Address Table.

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  • 10. 

    What is the purpose of the subnet mask in conjunction with an IP address? 

    • To identify whether the address is public or private 

    • To determine the subnet to which the host belongs 

    • To uniquely identify a host on a network 

    • To mask the IP address to outsiders 

    Correct Answer
    A. To determine the subnet to which the host belongs 
    Explanation
    The purpose of the subnet mask in conjunction with an IP address is to determine the subnet to which the host belongs. The subnet mask is used to divide an IP address into network and host portions. By comparing the subnet mask with the IP address, the network can determine which part of the address represents the network and which part represents the host. This allows for efficient routing of data within the network and ensures that the host can communicate with other devices within the same subnet.

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  • 11. 

    A network consists of end-devices, network devices and media. Select the end devices from the following list. (select three)

    • Router

    • Laptop Computer

    • Ethernet Switch

    • Printer

    • Wireless Phone

    Correct Answer(s)
    A. Laptop Computer
    A. Printer
    A. Wireless Phone
    Explanation
    The end devices in a network are the devices that are used by the end users to access the network. These devices include laptops, printers, and wireless phones. Routers and Ethernet switches, on the other hand, are network devices that are used to connect different networks and manage network traffic. Therefore, the correct answer is Laptop Computer, Printer, and Wireless Phone.

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  • 12. 

    Which command can be used to test connectivity between two computers that are a5ached to a network?

    • Ipconfig

    • Ping

    • Winipcfg

    • Ifconfig

    • Netstat -s

    Correct Answer
    A. Ping
    Explanation
    The correct answer is "ping". The ping command is used to test connectivity between two computers on a network by sending an ICMP echo request to the target computer and waiting for a response. If a response is received, it indicates that there is a network connection between the two computers. This command is commonly used to troubleshoot network connectivity issues and measure the round-trip time (RTT) between the sender and receiver.

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  • 13. 

    What is the Transport layer PDU called?

    • Packet

    • Frame

    • Segment

    • Block

    Correct Answer
    A. Segment
    Explanation
    The Transport layer PDU is called a segment. In computer networking, the Transport layer is responsible for breaking down the data received from the upper layers into smaller segments or chunks, which can then be transmitted over the network. These segments contain the necessary information for the network to properly deliver and reassemble the data at the receiving end. Therefore, the correct answer is segment.

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  • 14. 

    What message sequence does TCP use to establish a session?

    • Three-way handshake: syn, syn-ack, ack

    • Fin, ack, fin, ack

    • Four-way handshake: syn, syn-ack, syn, syn-ack

    • Three-way handshake: syn, syn-ack, syn, syn-ack

    Correct Answer
    A. Three-way handshake: syn, syn-ack, ack
    Explanation
    TCP uses a three-way handshake to establish a session. This involves the following message sequence: the client sends a synchronization (SYN) message to the server, the server responds with a synchronization-acknowledgment (SYN-ACK) message, and finally, the client sends an acknowledgment (ACK) message to the server. This three-step process ensures that both the client and server agree on the initial sequence numbers and establish a reliable connection before data transmission begins.

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  • 15. 

    What is the format of a Broadcast MAC Address?

    • 23-af-56-b4-9c-4e

    • FF-FF-FF-FF-FF-FF

    • BR-OA-DC-AS-T0-00

    • 00-00-00-00-00-00

    Correct Answer
    A. FF-FF-FF-FF-FF-FF
    Explanation
    The format of a Broadcast MAC Address is FF-FF-FF-FF-FF-FF.

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  • 16. 

    What is the function of the Physical Layer Protocol?

    • It includes the user I/O devices such as keyboard and monitor

    • It opens, closes and manages sessions

    • It manages the network device to network device link connection

    • It performs formatting of data to the user

    • It is responsible for the transmission of bits on the physical medium.

    Correct Answer
    A. It is responsible for the transmission of bits on the physical medium.
    Explanation
    The Physical Layer Protocol is responsible for the transmission of bits on the physical medium. This means that it handles the actual transfer of data between devices over the physical network. It ensures that the data is properly transmitted and received, managing aspects such as signal encoding, modulation, and synchronization. The Physical Layer Protocol is essential for establishing a reliable and efficient communication link between network devices.

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  • 17. 

    Convert the following binary number to decimal: 0101001

    • 41

    • 36

    • 25

    • 18

    Correct Answer
    A. 41
    Explanation
    The given binary number, 0101001, can be converted to decimal by multiplying each digit by the corresponding power of 2 and adding the results. Starting from the rightmost digit, the calculation would be: 1*2^0 + 0*2^1 + 0*2^2 + 1*2^3 + 0*2^4 + 1*2^5 + 0*2^6 = 1 + 0 + 0 + 8 + 0 + 32 + 0 = 41.

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  • 18. 

    Which field in the IPv4 header Is used to prevent a packet from traversing a network endlessly? 

    • Time-to-Live 

    • Sequence Number

    • Acknowledgment Number

    • Differentiated Services 

    Correct Answer
    A. Time-to-Live 
    Explanation
    The Time-to-Live field in the IPv4 header is used to prevent a packet from traversing a network endlessly. It is a counter that specifies the maximum number of network hops (routers) that the packet can pass through before being discarded. Each time the packet passes through a router, the TTL value is decremented by one. If the TTL reaches zero, the packet is discarded and an error message is sent back to the source. This mechanism helps to prevent packets from indefinitely circulating in a network and consuming network resources.

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  • 19. 

    What is the value of TCP being connection-oriented?

    • It allows the two end points to manage the connection with such services as reliability and flow control.

    • It only allows each side to reference specific destination end-point.

    • It gives the connection, wire-connected properties to improve bandwidth.

    • It permits the end-user to be identified by a port number.

    Correct Answer
    A. It allows the two end points to manage the connection with such services as reliability and flow control.
    Explanation
    TCP (Transmission Control Protocol) is a connection-oriented protocol that allows the two end points to manage the connection with services such as reliability and flow control. This means that TCP ensures that data packets are delivered in the correct order, without errors, and with guaranteed delivery. It also manages the flow of data between the sender and receiver, preventing congestion and ensuring efficient transmission. This connection-oriented nature of TCP is what enables it to provide these services and make it a reliable and widely used protocol in network communication.

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  • 20. 

    Which of the following correctly define what flags are used in a complete TCP connection setup?

    • SYN, SYN+ACK, ACK

    • ACK, ACK+SYN, SYN

    • SYN, SYN, ACK

    • SYN, ACK, FIN

    • ACK, ACK, SYN

    Correct Answer
    A. SYN, SYN+ACK, ACK
    Explanation
    During a complete TCP connection setup, the sender and receiver exchange certain control flags to establish the connection. The correct answer, SYN, SYN+ACK, ACK, accurately defines the sequence of flags used. The sender initiates the connection by sending a SYN (synchronize) flag. The receiver responds with a SYN+ACK (synchronize-acknowledge) flag to acknowledge the request and synchronize sequence numbers. Finally, the sender sends an ACK (acknowledge) flag to confirm the connection establishment. This three-way handshake ensures reliable communication between the sender and receiver before data transmission begins.

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  • 21. 

    What is a LAN?

    • Local Area Networks are typically within a building and connect office workers to servers.

    • Local Area Networks typically connect users within a single room.

    • Local Area Networks are used to connect an organization's network segments which are located in different cities.

    • Local Area networks cover a geographic area roughly the size of a city.

    • None of these answers are correct.

    Correct Answer
    A. Local Area Networks are typically within a building and connect office workers to servers.
    Explanation
    LAN stands for Local Area Network, which is a network that connects devices within a limited area such as a building or campus. It is used to connect office workers to servers, allowing them to share resources and communicate with each other. This answer accurately describes the purpose and scope of a LAN, making it the correct choice.

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  • 22. 

    Which of these are Intermediary Devices?

    • Switch

    • Router

    • PC

    • Tablet

    • VoiP Phone

    Correct Answer(s)
    A. Switch
    A. Router
    Explanation
    Switches and routers are both examples of intermediary devices in computer networks. A switch is a networking device that connects multiple devices within a local area network (LAN) and forwards data packets between them. It operates at the data link layer of the OSI model. On the other hand, a router is a networking device that connects multiple networks together and forwards data packets between them. It operates at the network layer of the OSI model. Both switches and routers play crucial roles in directing network traffic and ensuring efficient communication between devices in a network.

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  • 23. 

    Given that IPv6 has a large address space, the IPv6 standard does not allow subnetting.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement is false. IPv6, despite having a large address space, does allow subnetting. Subnetting is the process of dividing a network into smaller subnetworks, and it is a common practice in both IPv4 and IPv6 networks. Subnetting helps in efficient allocation of addresses and allows for better network management and organization. Therefore, the statement that IPv6 standard does not allow subnetting is incorrect.

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  • 24. 

    Convert the host portion of this IP Address to binary: 25.125.32.235/24

    • 00011001

    • 01111101

    • :eb

    • 11101011

    Correct Answer
    A. 11101011
    Explanation
    The given IP address is 25.125.32.235 with a subnet mask of /24. The subnet mask of /24 means that the first 24 bits of the IP address represent the network portion, and the remaining 8 bits represent the host portion. To convert the host portion to binary, we need to convert the decimal number 235 to binary, which is 11101011. Therefore, the correct answer is 11101011.

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  • 25. 
    This picture is an example of ________ Duplex communication. - ProProfs

    This picture is an example of ________ Duplex communication.

    Correct Answer
    full
    Explanation
    This picture is an example of full duplex communication. In full duplex communication, data can be transmitted in both directions simultaneously. This means that both parties can send and receive information at the same time, allowing for a more efficient and seamless exchange of data.

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  • 26. 

    Convert the following binary number to decimal: 11100111 

    • 125

    • 231

    • 236

    • 118

    Correct Answer
    A. 231
    Explanation
    The given binary number, 11100111, can be converted to decimal by multiplying each digit by its corresponding power of 2 and adding them together. Starting from the rightmost digit, the powers of 2 are 2^0, 2^1, 2^2, 2^3, 2^4, 2^5, 2^6, and 2^7. Multiplying each digit by its corresponding power of 2 and adding them together, we get: 1*(2^0) + 1*(2^1) + 1*(2^2) + 0*(2^3) + 0*(2^4) + 1*(2^5) + 1*(2^6) + 1*(2^7) = 231. Therefore, the correct answer is 231.

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  • 27. 

    What is the difference between a dynamic IP address and a static IP address? Select the most correct answer.

    • A dynamic IP address requires the use of DNS whereas a static IP address requires the use of DHCP.

    • A dynamic IP address is always obtained from the connected router whereas a static IP address is manually configured.

    • A dynamic IP address is manually configured whereas a sta!c IP address is obtained from the DHCP server.

    • A dynamic IP address is obtained from a DHCP server whereas a static IP address is manually configured

    • A dynamic IP address is of the form 169.254.x.x whereas a sta!c IP address is in the form of X.X.X.X where X a decimal value between 0 and 255.

    Correct Answer
    A. A dynamic IP address is obtained from a DHCP server whereas a static IP address is manually configured
    Explanation
    A dynamic IP address is obtained from a DHCP server, which automatically assigns IP addresses to devices on a network. This means that the IP address can change each time the device connects to the network. On the other hand, a static IP address is manually configured, meaning that it is set by the user and does not change. Static IP addresses are often used for devices that require a consistent and fixed IP address, such as servers or printers.

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  • 28. 

    Select the transport layer protocols (select 2).

    • Transmission Control Protocol

    • User Datagram Protocol

    • Transport Layer Transfer Protocol

    • File Transfer Protocol

    Correct Answer(s)
    A. Transmission Control Protocol
    A. User Datagram Protocol
    Explanation
    The correct answer is Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). TCP is a reliable and connection-oriented protocol that ensures the delivery of data packets in the correct order and without loss. UDP, on the other hand, is a connectionless and unreliable protocol that does not guarantee the delivery of data packets. Both TCP and UDP are widely used in network communication, with TCP being commonly used for applications that require reliable data transfer, such as web browsing and email, and UDP being used for real-time applications like video streaming and online gaming.

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  • 29. 
    The network diagram shows the simplified MAC address next to their respective interfaces. PCO sends a message to PC I. To which MAC Address does PCO send the frame?  - ProProfs

    The network diagram shows the simplified MAC address next to their respective interfaces. PCO sends a message to PC I. To which MAC Address does PCO send the frame? 

    • 00-01-0b

    • 00-01-0c

    • 00-01-0d

    • 00-01-0e

    • 00-01-0f

    Correct Answer
    A. 00-01-0b
    Explanation
    PCO sends the frame to the MAC address 00-01-0b.

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  • 30. 

    What is true concerning physical and logical topologies?

    • The logical topology is always the same as the physical topology

    • Physical topologies are concerned with how a network transfers frames.

    • Physical topologies display the IP addressing scheme of each network.

    • Logical topologies refer to how a network transfers data between devices.

    Correct Answer
    A. Logical topologies refer to how a network transfers data between devices.
    Explanation
    The correct answer explains that logical topologies refer to how a network transfers data between devices. This means that logical topologies define the flow of data between devices in a network, including the paths and protocols used for data transfer. It is different from physical topologies, which describe the physical layout and connections of devices in a network. Therefore, the statement that logical topologies refer to how a network transfers data between devices is true.

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  • 31. 

    Using the network in the diagram, what would be the default gateway address for host A in the 192.133.219.0 network? 

    • 192.133.219.0

    • 192.135.250.1

    • 192.31.7.1

    • 192.133.219.1

    Correct Answer
    A. 192.133.219.1
    Explanation
    The default gateway address for host A in the 192.133.219.0 network would be 192.133.219.1.

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  • 32. 

    Running the command to find out what IP address has been assigned to your network adapter reveals an IP address of 169.254.10.22. Can you conclude that your network adaptor has successfully acquired an address from the DHCP server?

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The IP address 169.254.10.22 is in the range of APIPA (Automatic Private IP Addressing) which is assigned when a device is unable to acquire an IP address from a DHCP server. This indicates that the network adapter has not successfully acquired an address from the DHCP server. Therefore, the conclusion that the network adapter has successfully acquired an address from the DHCP server is false.

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  • 33. 

    Why do network devices need two layers of addressing, Data Link Layer Address (i.e. Ethernet) and a Network Layer Address (i.e. IP Address)?

    • A Network Layer Address is used to forward the packet from one network segment to another network segment. The Data Link Address is used to forward the frame from one device to another within the network segment.

    • The IP Address can be used to forward packets to the final destination but historically Ethernet was developed first so it continues to be used for Data Link Addressing

    • A Data Link Layer Address is used to forward the packet from one network segment to another network segment. The Network Layer Address is used to forward the frame from one device to another within the network segment

    • Since MAC addresses are unique, a Data Link Layer Addresses can be used to forward frames to any destination. A Network Layer Address is logical a can only be used to send data to a destination on the same network segment

    Correct Answer
    A. A Network Layer Address is used to forward the packet from one network segment to another network segment. The Data Link Address is used to forward the frame from one device to another within the network segment.
    Explanation
    Network devices need two layers of addressing, Data Link Layer Address (i.e. Ethernet) and a Network Layer Address (i.e. IP Address), because they serve different purposes. The Network Layer Address is used to route packets from one network segment to another, allowing communication between different networks. On the other hand, the Data Link Layer Address is used to direct frames within the same network segment, enabling communication between devices within the same network. Both addresses are necessary for efficient and effective network communication, with the Network Layer Address handling inter-network communication and the Data Link Layer Address handling intra-network communication.

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  • 34. 

    What is the purpose of the DNS application?

    • Translate a private IP address into a public IP address

    • Translate a private host name (ie URL) into a public host name (ie URL)

    • Translate a host name (ie URL) into an IP address

    • All of the above

    Correct Answer
    A. Translate a host name (ie URL) into an IP address
    Explanation
    The purpose of the DNS (Domain Name System) application is to translate a host name (URL) into an IP address. DNS allows users to access websites or other resources on the internet by using easy-to-remember domain names instead of typing in the numerical IP addresses. When a user enters a URL in their web browser, the DNS system translates that domain name into the corresponding IP address of the server where the website is hosted. This enables the browser to establish a connection with the correct server and retrieve the requested content.

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  • 35. 

    Which protocol implements the Media Access Control?

    • CSMA/CA

    • AXMA/CD

    • CSAM/CD

    • CSMA/CV

    • CSMA/CD

    Correct Answer
    A. CSMA/CD
    Explanation
    CSMA/CD (Carrier Sense Multiple Access with Collision Detection) is the protocol that implements the Media Access Control. This protocol is used in Ethernet networks to regulate access to the transmission medium. It allows multiple devices to share the same network by sensing if the medium is busy before transmitting data. If a collision is detected, the devices involved will wait for a random amount of time before retransmitting, reducing the chances of further collisions. CSMA/CD is widely used in traditional Ethernet networks, ensuring efficient and reliable data transmission.

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  • 36. 

    Convert the following decimal number to Hex: 147 All answers shown are In Hex. 

    • A6

    • 9c

    • 93

    • D4

    Correct Answer
    A. 93
    Explanation
    The correct answer is 93 because when converting the decimal number 147 to hexadecimal, we divide it by 16 repeatedly until the quotient is 0. The remainders in each division are then converted to hexadecimal digits. In this case, 147 divided by 16 equals 9 with a remainder of 3. The remainder 3 corresponds to the hexadecimal digit 3. Therefore, the hexadecimal representation of 147 is 93.

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  • 37. 

    Convert /17 to decimal notation

    Correct Answer
    255.255.128.0
    Explanation
    The given answer, 255.255.128.0, is the decimal notation for the IP address /17. In IP address notation, the /17 indicates that the first 17 bits of the address are network bits, while the remaining 15 bits are host bits. In decimal notation, each octet represents 8 bits, so the first two octets, 255.255, represent the network bits. The third octet, 128, represents the first 7 host bits, and the fourth octet, 0, represents the remaining 8th host bit. Therefore, the decimal notation for /17 is 255.255.128.0.

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  • 38. 

    What is the second host address for the following network address: 10.205.53.32/27? 

    • 10.205.53.33

    • 10.205.53.31

    • 10.205.53.34

    • 10.205.53.32

    Correct Answer
    A. 10.205.53.34
    Explanation
    The given network address is 10.205.53.32/27. This means that the first 27 bits are the network address and the remaining 5 bits are for host addresses. To find the second host address, we increment the host address by 1. Therefore, the second host address would be 10.205.53.33. However, in the given options, the second host address is incorrectly listed as 10.205.53.34.

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  • 39. 

    How many usable host addresses are contained in this network address: 192.168.1.0/31? 

    • 4

    • 0

    • 2

    • 8

    Correct Answer
    A. 0
    Explanation
    The network address 192.168.1.0/31 has a subnet mask of 31. A subnet mask of 31 allows for only two usable host addresses. However, one of these addresses is reserved as the network address and the other as the broadcast address. Therefore, there are no usable host addresses available in this network address.

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  • 40. 

    For the subnet ID 192.169.64.0/24, what is the directed broadcast address? 

    Correct Answer
    192.169.64.255
    Explanation
    The directed broadcast address is the highest address in a subnet, where all the devices in that subnet can receive broadcast messages. In this case, the subnet ID is 192.169.64.0/24, which means the subnet has a range of 256 IP addresses. The directed broadcast address is calculated by setting all host bits to 1 in the subnet ID. Therefore, the directed broadcast address for this subnet is 192.169.64.255.

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  • 41. 

    What best describes the function of the Application Layer from the TCP/IP model?

    • Message routing.

    • Segmentation and reassembly of messages

    • Defines the content and formatting of client requests and server responses.

    • Media Access Control.

    Correct Answer
    A. Defines the content and formatting of client requests and server responses.
    Explanation
    The Application Layer in the TCP/IP model is responsible for defining the content and formatting of client requests and server responses. This layer ensures that the data sent by the application is properly formatted and understood by the receiving application. It also handles tasks such as data encryption, compression, and authentication. By defining the structure and content of the data, the Application Layer enables communication between different applications and ensures that the data is interpreted correctly on both ends.

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  • 42. 

    What is the minimum size of an Ethernet frame?

    • 56 bytes

    • 64 bytes

    • 128 bytes

    • 1024 bytes

    Correct Answer
    A. 64 bytes
    Explanation
    The minimum size of an Ethernet frame is 64 bytes. This is because the Ethernet protocol requires a minimum payload size of 46 bytes, and when headers and other necessary information are added, the total size of the frame becomes 64 bytes. Frames smaller than this minimum size are considered invalid and may be discarded by the network devices.

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  • 43. 

    What is the primary purpose of the ping utility? Select the most correct answer.

    • It is used to check if the default gateway has been configured.

    • It is used to test layer 3 connectivity to the interface on another network device.

    • It is intended to be used with Wireshark.

    • It is part of the ICMP suite of utilities

    • It is used to generate an alert tone on a remote device.

    Correct Answer
    A. It is used to test layer 3 connectivity to the interface on another network device.
    Explanation
    The primary purpose of the ping utility is to test layer 3 connectivity to the interface on another network device. Ping sends an ICMP echo request message to the destination device and waits for an ICMP echo reply message. This allows network administrators to verify if the destination device is reachable and measure the round-trip time for the packets.

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  • 44. 

    A PC sends a TCP segment to a Web application using source port=53000 and destination port=443. What destination port number does the Web server use on the reply?

    • 53000

    • 80

    • 443

    • Random value

    Correct Answer
    A. 53000
    Explanation
    The Web server will use the same destination port number as the source port number of the TCP segment it received, which is 53000. This is because the destination port number in the TCP segment specifies the port on the receiving end where the data should be delivered. By using the same port number for the reply, the Web server ensures that the response is sent back to the correct source port on the PC that initiated the communication.

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  • 45. 

    What is the first host address for the following network address: 10.205.53.32/27 ?

    • 10.205.53.33

    • 10.205.53.34

    • 10.205.53.31

    • 10.205.53.32

    Correct Answer
    A. 10.205.53.33
    Explanation
    The given network address is 10.205.53.32/27, which means that the first 27 bits are the network address and the remaining 5 bits are for host addresses. Therefore, the first host address would be obtained by incrementing the last bit of the network address, which is 10.205.53.32, by 1. Hence, the first host address is 10.205.53.33.

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  • 46. 

    What part of the URL, http://www.cisco.com/index.html, represents the top-level DNS domain?

    • .com

    • Www

    • Http

    • Index

    Correct Answer
    A. .com
    Explanation
    The top-level DNS domain is represented by the ".com" part of the URL. The top-level domain (TLD) is the last part of a domain name and it indicates the type of organization or country associated with the website. In this case, ".com" is a generic top-level domain (gTLD) commonly used for commercial websites. The other options, "www", "http", and "index", do not represent the top-level DNS domain.

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  • 47. 

    A PC sends a TCP Window size of 0. What does this mean?

    • The PC can receive unlimited data

    • The PC cannot receive any data.

    • The PC will stop sending a data.

    • The PC will send unlimited data.

    Correct Answer
    A. The PC cannot receive any data.
    Explanation
    When a PC sends a TCP Window size of 0, it means that the PC's receiving buffer is full and it cannot receive any more data at the moment. The TCP Window size is used to control the flow of data between the sender and receiver in a TCP connection. By setting the window size to 0, the PC is indicating that it cannot accept any more data until its buffer is freed up and more space becomes available. Therefore, the PC cannot receive any data until it increases its window size.

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  • 48. 

    How many bits and Hex digits does the MAC Address have?

    • 48 bits (12 Hex digits)

    • 48 bits (18 Hex digits)

    • MAC Addresses don't use Hex digits

    • 24 bits (6 Hex digits)

    • 32 bits (18 Hex digits)

    Correct Answer
    A. 48 bits (12 Hex digits)
    Explanation
    A MAC address is a unique identifier assigned to a network interface card (NIC) by the manufacturer. It consists of 48 bits, which can be represented by 12 hexadecimal (Hex) digits. Each hexadecimal digit represents 4 bits, so 12 digits are needed to represent 48 bits. Therefore, the correct answer is 48 bits (12 Hex digits).

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  • 49. 

    Convert 255.255.255.192 to prefix/slash notation. 

    Correct Answer
    /26
    Explanation
    The given IP address 255.255.255.192 can be converted to prefix/slash notation by counting the number of network bits. In this case, the subnet mask 255.255.255.192 has 26 network bits, which means that the first 26 bits of the IP address are used to identify the network, while the remaining 6 bits are used for host addresses. Therefore, the correct answer is /26.

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Quiz Review Timeline (Updated): Aug 7, 2024 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Aug 07, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 19, 2019
    Quiz Created by
    Rockayoub13
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