Sdp9 From The Photos

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| By Daniyar
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Daniyar
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Quizzes Created: 2 | Total Attempts: 960
| Attempts: 182
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  • 1/209 Questions

    Small piece of data sent from a website and stored on the users computer by the users web browser while the user is browsing

    • Web cache
    • Set – cookies
    • Cookies
    • Status line
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About This Quiz

SDP9 from the photos explores key concepts in network communications, including packet delivery, network architecture, and data transfer methods. This quiz assesses understanding of fundamental internet technologies, enhancing skills relevant for IT and computer science fields.

Sdp9 From The Photos - Quiz

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  • 2. 

    1. The entire hostname has a maximum of ___________

    • 255

    • 63

    • 127

    • 21

    Correct Answer
    A. 255
    Explanation
    The correct answer is 255. In the domain name system (DNS), a hostname is a label assigned to a device connected to a computer network. The maximum length of a fully-qualified domain name (FQDN) is 255 characters, including the hostname and the domain name. This limit is imposed by the DNS protocol and ensures compatibility and efficient functioning of the system.

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  • 3. 

    Which of the following statements best describes the purpose of the SNMP protocol

    • The SNMP protocol is a tool for gathering data about network conditions and executing remote actions at remote managed devices

    • The SNMP protocol specified the action …

    • The SNMP protocol is used by the network …

    Correct Answer
    A. The SNMP protocol is a tool for gathering data about network conditions and executing remote actions at remote managed devices
    Explanation
    The correct answer explains that the purpose of the SNMP protocol is to gather data about network conditions and perform remote actions on managed devices. This means that SNMP allows for monitoring and managing network devices by collecting information and enabling remote control over them.

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  • 4. 

    _______ is a repository of information linked together from points all over the world

    • Www

    • Html

    • Http

    • None

    Correct Answer
    A. Www
    Explanation
    The answer "www" is correct because it stands for World Wide Web, which is a system of interconnected documents and other resources, linked by hyperlinks and URLs. It is a repository of information that is accessible from points all over the world.

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  • 5. 

    Andalyn says complete 48-bit MAC addresses are allocated to NIC manufacturers from the IEEE. Buster says the IEEE only assigns the first 24 bits to manufacturers. Carlos says the IEEE assigns only the last 24 bits to manufacturers.Who is correct?

    • Only Andalyn is correct

    • Only Buster is correct

    • Only Carlos is correct

    • No one is correct

    Correct Answer
    A. Only Buster is correct
    Explanation
    Buster is correct because the IEEE assigns the first 24 bits (the first 3 bytes) of a 48-bit MAC address to manufacturers. The remaining 24 bits (the last 3 bytes) are typically assigned by the manufacturers themselves to identify individual network interface cards (NICs). Therefore, Carlos is incorrect in stating that the IEEE assigns only the last 24 bits to manufacturers. Andalyn is also incorrect in stating that complete 48-bit MAC addresses are allocated to NIC manufacturers from the IEEE.

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  • 6. 

    A single channel is shared by multiple signals by

    • Multiplexing

    • Analog modulation

    • Digital modulation

    • None

    Correct Answer
    A. Multiplexing
    Explanation
    Multiplexing is the process of combining multiple signals into a single channel for transmission. It allows multiple signals to share the same channel by dividing the available bandwidth into smaller sub-channels, each carrying a different signal. This enables efficient utilization of the channel and increases the capacity for transmitting multiple signals simultaneously. Analog modulation and digital modulation are techniques used to modify the characteristics of a carrier signal to carry information, but they do not specifically address the sharing of a single channel by multiple signals. Therefore, the correct answer is multiplexing.

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  • 7. 

    The size of the TCP RcvWindow never changes throughout the duration of the connection

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The size of the TCP RcvWindow can change throughout the duration of the connection. The TCP RcvWindow represents the amount of data that the receiver is willing to accept at any given time. It can be dynamically adjusted based on network conditions, congestion levels, and available buffer space on the receiver's side. Therefore, it is not fixed and can change during the connection.

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  • 8. 

    An 802 11 frame includes

    • Four address fields.

    • A sequence number field.

    • An acknowledgement field.

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    An 802.11 frame includes four address fields, a sequence number field, and an acknowledgement field. This means that all of the mentioned fields are present in an 802.11 frame. The address fields are used to specify the source and destination MAC addresses. The sequence number field is used for reliable data transmission and to detect and discard duplicate frames. The acknowledgement field is used to confirm the successful reception of a frame. Therefore, all of these fields are included in an 802.11 frame.

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  • 9. 

    How to understand the connection-oriented protocol?

    • Means that before the client and server can start to send data to each other, they first need to handshake and establish a TCP connection

    • Means that provide an application with one or more security services

    • Can also provide timing guarantees

    • Offers a different set of services to the invoking applications

    Correct Answer
    A. Means that before the client and server can start to send data to each other, they first need to handshake and establish a TCP connection
    Explanation
    The correct answer explains that understanding the connection-oriented protocol means that before the client and server can start to send data to each other, they first need to handshake and establish a TCP connection. This handshake process ensures that both parties are ready and able to communicate effectively, creating a reliable and ordered transmission of data. By establishing a connection, the protocol ensures that data is sent and received in the correct order and without errors.

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  • 10. 

    Network clients use well-known _______ numbers to contact well-defined network services. such as Telnet and DNS servers

    • Accept

    • Connect

    •  listen

    • Port

    Correct Answer
    A. Port
    Explanation
    Network clients use well-known port numbers to contact well-defined network services. A port is a virtual endpoint for communication in an operating system. It allows multiple applications to use the network simultaneously by assigning a unique number to each application. Well-known port numbers are reserved for specific services such as Telnet and DNS servers. By using these port numbers, clients can establish a connection with the appropriate network service and communicate effectively.

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  • 11. 

    Small piece of data sent from a website and stored in the user’s web browser while the user is browsing

    • Set-cookies

    • Web cache

    • Status line

    • Cookies

    Correct Answer
    A. Cookies
    Explanation
    Cookies are small pieces of data that are sent from a website and stored in the user's web browser while the user is browsing. They are used to track and remember user preferences, store login information, and provide personalized experiences. Cookies are commonly used by websites to enhance user experience and improve website functionality.

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  • 12. 

    FTP uses ____ parallel TCP connections to transfer a file

    • 1

    • 2

    • 3

    • 4

    Correct Answer
    A. 2
    Explanation
    FTP uses 2 parallel TCP connections to transfer a file. One connection is used for control information and the other connection is used for data transfer. The control connection is responsible for sending commands and receiving responses, while the data connection is used to transfer the actual file data. This separation allows for efficient and reliable file transfers.

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  • 13. 

    In IPv4 protocol, each datagram is handled

    • Independently

    • Dependently

    • Priority basis

    • Systematically

    Correct Answer
    A. Independently
    Explanation
    In IPv4 protocol, each datagram is handled independently. This means that each datagram, or packet of data, is treated as a separate entity and is processed individually. This allows for efficient routing and delivery of data across the network, as each packet can take its own path and be processed separately from others. Handling packets independently also ensures that if there is an issue with one packet, it does not affect the processing of other packets, improving overall network reliability and performance.

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  • 14. 

    Communication between a computer and a keyboard involves ______________ transmission

    • Automatic

    • Half-duplex

    • Full-duplex

    • Single direction

    Correct Answer
    A. Single direction
    Explanation
    The correct answer is "Single direction" because communication between a computer and a keyboard is typically one-way. The keyboard sends input signals to the computer, but the computer does not send any signals back to the keyboard. This makes it a single direction transmission.

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  • 15. 

    Which of the following is most likely to be a MAC address assigned to a NIC?

    • 23.4f.17.8a.4c.10

    • 192.168.1.121

    • 713.555.1212

    • 24.17.232.75

    Correct Answer
    A. 23.4f.17.8a.4c.10
    Explanation
    The MAC address is a unique identifier assigned to a network interface card (NIC). It consists of six pairs of hexadecimal digits separated by colons or hyphens. The given option "23.4f.17.8a.4c.10" follows this format and is therefore most likely to be a MAC address assigned to a NIC. The other options are IP addresses or phone numbers, which do not match the format of a MAC address.

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  • 16. 

    Local DNS name servers

    • Cache resource records, but discard them after a period of time that is on the order of a few days

    • Cache resource records and never discard them

    • Obtain resource records from Web caches

    • Never cache resource records

    Correct Answer
    A. Cache resource records, but discard them after a period of time that is on the order of a few days
    Explanation
    Local DNS name servers cache resource records to improve the efficiency of DNS lookups. By storing recently accessed resource records, the name server can quickly respond to subsequent requests for the same information without having to query external DNS servers. However, to ensure the accuracy and timeliness of the information, these cached records are discarded after a certain period of time, typically a few days. This allows the name server to periodically update its cache with fresh information from authoritative DNS servers.

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  • 17. 

    An 802.11 frame includes

    • A sequence number field

    • All of the above

    • An acknowledgement field

    • Four address fields

    Correct Answer
    A. All of the above
    Explanation
    An 802.11 frame includes a sequence number field, an acknowledgement field, and four address fields. The sequence number field is used to keep track of the order of frames being transmitted. The acknowledgement field is used to confirm that a frame has been successfully received. The four address fields are used to specify the source and destination addresses of the frame. Therefore, all of the options mentioned in the question are correct.

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  • 18. 

    How much data can a typical frame contain?

    • 1 megabyte

    • 500 bytes

    • 1500 bytes

    • 1500 bits

    Correct Answer
    A. 1500 bytes
    Explanation
    A typical frame can contain up to 1500 bytes of data. This refers to the maximum amount of information that can be transmitted within a single frame in a network communication system. Frames are used to package data for transmission over a network, and the size of a frame determines the amount of data that can be sent at once. In this case, 1500 bytes is the correct answer as it represents the typical maximum capacity of a frame.

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  • 19. 

    1. Suppose a client sends an HTTP request message with the If-modified-since: header. Suppose the object in a server has not 1changed since the last time a client retrieved the object. Then the server will send a response message with the status code

    • 404 Not Found

    • 200 OK

    • 304 Not Modified

    • None of the above

    Correct Answer
    A. 304 Not Modified
    Explanation
    When a client sends an HTTP request message with the If-modified-since header, it means that the client is requesting a resource only if it has been modified since a certain date. In this scenario, the object on the server has not changed since the last time the client retrieved it. Therefore, the server will send a response message with the status code 304 Not Modified. This status code indicates that the requested resource has not been modified and the client can use its cached version without downloading it again.

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  • 20. 

    1. FTP uses _ parallel TCP connection to transfer

    • 1

    • 2

    • 3

    • 4

    Correct Answer
    A. 2
    Explanation
    FTP uses 2 parallel TCP connections to transfer data. One connection is used for control information, such as commands and responses, while the other connection is used for the actual data transfer. This allows for efficient and reliable transfer of files over the network.

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  • 21. 

    The internet protocol defines the __ layer of the Internet protocol stack

    • Application

    •  transport

    • Physical

    •  network

    Correct Answer
    A.  network
    Explanation
    The internet protocol defines the network layer of the Internet protocol stack. This layer is responsible for routing and forwarding data packets across different networks. It ensures that data packets are delivered to the correct destination by using logical addresses and establishing connections between different networks. The network layer also handles congestion control and error handling.

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  • 22. 

    How much data can a typical frame contain?

    • 1 megabyte

    • 1500 bits

    • 1500 bytes

    • 500 bytes

    Correct Answer
    A. 1500 bytes
    Explanation
    A typical frame can contain a maximum of 1500 bytes of data. This is a common limit set by network protocols like Ethernet. Frames are used to transmit data over a network, and the size of the frame determines the amount of data that can be sent in a single transmission. The 1500-byte limit helps to ensure efficient and reliable data transfer by balancing the amount of data that can be sent in each frame with the overhead required for addressing and error checking.

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  • 23. 

    Ethernet provides which of the following services to the network layer

    • Flow control

    • Error detection

    • Reliable data transfer

    • All of the above

    Correct Answer
    A. Error detection
    Explanation
    Ethernet provides error detection to the network layer. Error detection is a service provided by Ethernet to ensure that data transmitted over the network is received without any errors. This is done by using techniques such as checksums or cyclic redundancy checks (CRC) to detect any errors in the data. By providing error detection, Ethernet helps to ensure the integrity and reliability of data transmission in the network.

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  • 24. 

    Link layer data is

    • Message

    • Frame

    • Datagram

    • Data

    • Segment

    Correct Answer
    A. Frame
    Explanation
    The correct answer is "frame" because in the link layer of the network protocol stack, data is divided into frames. Frames contain both the payload (data) and control information necessary for transmitting the data over the physical network. Frames are used to ensure reliable and efficient transmission of data between network devices.

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  • 25. 

    For BitTorrent, which of the following is true:

    • Among the chunks that a peer does not have, the peer will request chunks that appear to be relatively rare in the torrent.

    • At a given instant of time, a peer A may upload to a peer B, even if peer B is not sending anything to A.

    • Although a peer may have 50 concurrent TCP connections with other peers, at any given instant of time it sends data to less than 10 other peers.

    • All of the above.

    Correct Answer
    A. All of the above.
    Explanation
    BitTorrent is a peer-to-peer file sharing protocol where peers exchange chunks of a file. The first statement is true because peers prioritize requesting chunks that are rare in the torrent to increase availability. The second statement is true because BitTorrent allows for reciprocal uploading, where a peer can upload to another peer even if they are not receiving anything in return. The third statement is true because although a peer can have multiple TCP connections, it typically sends data to only a subset of those connections at any given time. Therefore, all of the statements are true.

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  • 26. 

    Packets sent by two stations in 802.11 can collide because

    • At a given time, the random backoff values of the two stations are the same

    • The packets are sent to different Aps but on the same channel

    • The two stations could be hidden from each other

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    The correct answer is "All of the above". This means that all of the given options can lead to packet collision in 802.11. When the random backoff values of two stations are the same, they may attempt to transmit at the same time, resulting in a collision. Similarly, if the packets are sent to different Access Points (APs) but on the same channel, they can interfere with each other and collide. Additionally, if the two stations are hidden from each other, they may not be able to detect each other's transmissions and collide.

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  • 27. 

    A beacon frame sent by an AP includes:

    • Both the AP's MAC address and SSID.

    • The AP's SSID.

    • The AP's MAC address.

    • None of the above

    Correct Answer
    A. Both the AP's MAC address and SSID.
    Explanation
    A beacon frame is a type of management frame that is periodically broadcasted by an access point (AP) in a Wi-Fi network. It is used to announce the presence of the network and provide essential information to client devices. In this case, the correct answer is "both the AP's MAC address and SSID." This means that the beacon frame includes both the unique identifier (MAC address) of the AP and the network name (SSID) that clients can connect to. This information allows client devices to identify and join the appropriate network.

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  • 28. 

    1. Andalyn says complete 48-bit MAC addresses are allocated to NIC manufacturers from the IEEE. Buster says the IEEE only assigns the first 24 bits to manufacturers. Carlos says the IEEE assigns only the last 24 bits to manufacturers. Who is correct?

    • Only Andalyn is correct

    • Only Buster is correct

    • Only Carlos is correct

    • No one is correct

    Correct Answer
    A. Only Buster is correct
    Explanation
    Buster is correct because the IEEE assigns the first 24 bits, also known as the Organizationally Unique Identifier (OUI), to manufacturers. The remaining 24 bits are assigned by the manufacturers themselves to create unique MAC addresses for their network interface cards (NICs). Therefore, Carlos is incorrect in stating that the IEEE assigns only the last 24 bits to manufacturers. Andalyn is also incorrect in stating that complete 48-bit MAC addresses are allocated to NIC manufacturers by the IEEE.

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  • 29. 

    Suppose a client sends an HTTP request message with the if-modified-since: header. Suppose the object in a server has not changed since the last time a client retrieved the object. Then the server will send a response message with the status code

    • 404 Not Found

    • 304 Not Modified

    • 200 OK

    • None of the above

    Correct Answer
    A. 304 Not Modified
    Explanation
    When a client sends an HTTP request message with the if-modified-since header, it means that the client wants to retrieve the requested object only if it has been modified since the last time it was retrieved. In this scenario, if the object in the server has not changed, the server will send a response message with the status code 304 Not Modified. This indicates to the client that the requested object has not been modified and it can continue using the previously cached version.

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  • 30. 

    For BitTorrent , which of the following is true

    • Among the chunks that a peer does not have, the peer will request chunks that appear to be relatively rare in the torrent

    • Although a peer may have 50 concurrent TCP connections with other peers, at any given instant of time it sends data to less than 10 other peers

    • At a given instant of time, a peer A may upload to a peer B, even if peer B is not sending anything to A.

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    All of the statements are true for BitTorrent. In BitTorrent, peers prioritize requesting chunks that are relatively rare in the torrent, which helps in distributing the load and ensuring availability of all chunks. Additionally, although a peer can have multiple concurrent TCP connections, it typically sends data to fewer than 10 other peers at any given instant of time. Lastly, in a peer-to-peer network like BitTorrent, it is possible for a peer A to upload data to a peer B even if peer B is not actively sending anything to peer A.

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  • 31. 

    Three or more devices share a link in ___ connection

    • Multipoint

    • Unipoint

    • None

    • Point To Point

    Correct Answer
    A. Multipoint
    Explanation
    In a multipoint connection, three or more devices share a single link. This means that multiple devices can communicate with each other simultaneously on the same link. This is in contrast to a point-to-point connection, where only two devices are connected and can communicate with each other. Unipoint and none are not valid terms for describing the type of connection.

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  • 32. 

    The packet of information at the application layer is called __________

    • Packet

    • Message

    • Segment

    • Frame

    Correct Answer
    A. Message
    Explanation
    The packet of information at the application layer is called a message. In networking, a message refers to a unit of data that is transmitted between applications. It contains the actual data that needs to be communicated and is typically generated by the application layer protocol. Messages are then broken down into smaller units called segments or packets at lower layers of the network stack for transmission over the network.

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  • 33. 

    In a URL, the _______ is the full name of the file where the information is located

    • Path

    • Protocol

    • Host

    • None

    Correct Answer
    A. Path
    Explanation
    The path in a URL refers to the full name of the file where the information is located. It specifies the specific location or directory within a website where the file is stored. The path is an essential component of a URL as it helps to identify the exact location of the file, allowing the web browser to retrieve and display the information correctly.

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  • 34. 

    How many ports can be per IP address

    • 65.535

    • 64,535

    • 65,335

    • 68.535

    • 60,535

    Correct Answer
    A. 65.535
    Explanation
    The correct answer is 65.535. This is because the maximum number of ports that can be assigned to an IP address is 65,535. Ports are used to identify specific applications or services running on a device connected to a network. Each port is assigned a unique number between 0 and 65,535, allowing for a wide range of possible connections and services.

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  • 35. 

    TCP applies fast retransmit to a segment when

    • None of the above

    • It receives three ACKs for an earlier segment

    • The segment’s timer expires

    • It estimates unusually large RTTs

    Correct Answer
    A. It receives three ACKs for an earlier segment
    Explanation
    When TCP receives three ACKs for an earlier segment, it applies fast retransmit. This means that if the sender receives duplicate ACKs for a specific segment, it assumes that the next segment has been lost and immediately retransmits it without waiting for the timer to expire. This helps to improve the efficiency and speed of data transmission by reducing unnecessary delays caused by waiting for the timer to expire.

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  • 36. 

    On a network, the term authentication typically refers to the process of

    • Computing the checksum of packets

    • Ensuring that users remain anonymous

    • Ensuring that packets sent through the Internet cannot be intercepted

    • Verifying the identity of a sender or receiver

    Correct Answer
    A. Verifying the identity of a sender or receiver
    Explanation
    Authentication is the process of verifying the identity of a sender or receiver on a network. It ensures that the person or device claiming to be the sender or receiver is actually who they say they are. This is important for security purposes, as it helps prevent unauthorized access and ensures that only trusted individuals or devices can access the network or communicate with each other. By verifying identities, authentication helps maintain the integrity and confidentiality of network communications.

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  • 37. 

    Determine the correct class of the following IP address : 93.44.123.184

    • A

    • B

    • C

    • D

    • E

    Correct Answer
    A. A
    Explanation
    The given IP address, 93.44.123.184, falls under Class A. In Class A, the first octet of the IP address is used to identify the network, while the remaining three octets are used to identify the host. Since the first octet of the given IP address is between 1 and 126, it falls within the range of Class A addresses.

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  • 38. 

    How many ports can be per IP address

    • 65,535

    • 68,535

    • 65,335

    • 60,535

    • 64,535

    Correct Answer
    A. 65,535
    Explanation
    The correct answer is 65,535. This is the maximum number of ports that can be associated with a single IP address. Ports are used to establish connections between devices on a network, and each IP address can have multiple ports available for communication. The range of available ports is from 0 to 65,535, with certain ports reserved for specific services or protocols. Therefore, 65,535 is the correct answer as it represents the total number of ports that can be assigned to a single IP address.

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  • 39. 

    Time it takes for a small packet to travel from client to server and then back to the client

    • RIP

    • RDT

    • ARP

    • TTL

    • RTT

    Correct Answer
    A. RTT
    Explanation
    RTT stands for Round Trip Time, which refers to the time it takes for a packet to travel from a client to a server and then back to the client. It is a measure of the latency or delay in the network. By calculating the RTT, network administrators can assess the performance of the network and identify any potential issues or bottlenecks.

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  • 40. 

    Which of the following statements is (are) true of network protocols?\n I.A protocol is a set of rules that facilitate communication among network applications.\n II.Only a single protocol may govern any transmission

    • II only

    • I and II

    • None

    • I only

    Correct Answer
    A. I only
    Explanation
    The correct answer is "I only". This is because statement I is true, as a network protocol is indeed a set of rules that enable communication between network applications. However, statement II is false, as multiple protocols can govern a transmission depending on the specific requirements and technologies involved.

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  • 41. 

    Which of the following IP header fields provide simple error detection?

    • Fragmentation

    • Time to live

    • Type of service

    • Checksum

    Correct Answer
    A. Checksum
    Explanation
    The checksum field in the IP header provides a simple error detection mechanism. It is used to verify the integrity of the IP packet during transmission. The sender calculates the checksum by performing a mathematical operation on the contents of the packet, and the receiver recalculates the checksum upon receiving the packet. If the calculated checksum does not match the one in the header, it indicates that the packet has been corrupted or modified during transmission. Therefore, the checksum field helps in detecting errors in the IP packet.

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  • 42. 

    E-mails use ______________ protocol for sending messages

    • SMTP

    • FTP

    • HTTP

    • MIME

    Correct Answer
    A. SMTP
    Explanation
    SMTP stands for Simple Mail Transfer Protocol. It is the standard protocol used for sending emails over the internet. SMTP is responsible for the transmission of emails from the sender's email client to the recipient's email server. It uses a set of rules to ensure the reliable delivery of messages. Other protocols like FTP, HTTP, and MIME are not specifically designed for sending emails, making SMTP the correct answer.

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  • 43. 

    A packet with no data is sent from host A to host B on an otherwise idle network. The packet is found to have taken 35 milliseconds to reach B. The incremental overhead to send an additional byte (usually called the "throughput") is estimated to be five microseconds by repeatedly measuring the transmission times of long packets. Approximately, how long will an eight Kbytes (8192 bytes) packet take to reach B when sent from A?

    • Cannot be determined from the information given

    • 76 milliseconds

    • 55 milliseconds

    • 40 milliseconds

    Correct Answer
    A. 76 milliseconds
    Explanation
    The given information states that the incremental overhead to send an additional byte is five microseconds. However, it does not provide any information about the transmission time for an eight Kbytes packet. Therefore, it cannot be determined from the given information how long an eight Kbytes packet will take to reach B when sent from A.

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  • 44. 

    Ethernet provides which of the following services to the network layer

    • Flow control

    • Error detection

    • Reliable data transfer

    • All of the above

    Correct Answer
    A. Error detection
    Explanation
    Ethernet provides error detection to the network layer. Error detection is a service that allows the network layer to identify and detect errors or corruption in the data being transmitted over the Ethernet network. This helps in ensuring the integrity of the data and allows for prompt error correction or retransmission if necessary.

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  • 45. 

    What is the type of an “8+1” parity code that outputs 100101011?

    • Null Parity

    • Odd Parity

    • Cannot tell since we do not know which bit is the parity bit

    • Even Parity

    Correct Answer
    A. Odd Parity
    Explanation
    The given code outputs a sequence of 9 bits, which includes 8 data bits and 1 parity bit. In odd parity, the number of 1s in the code (including the parity bit) should be odd. By counting the number of 1s in the given code, we can see that there are 5 ones. Since 5 is an odd number, the given code follows odd parity.

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  • 46. 

    1. The password is sent to the server using _______ command.

    • None

    • PASS

    • PASSWD

    • PASSWORD

    Correct Answer
    A. PASS
    Explanation
    The password is sent to the server using the "PASS" command.

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  • 47. 

    Consider the latency model for dynamic congestion windows. Which of the following components contribute to latency?

    • The sum of all the stalled times

    • Round trip time, RTT

    • The transmission time of the object, O/R

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    All of the mentioned components contribute to latency in the latency model for dynamic congestion windows. The sum of all the stalled times refers to the time spent waiting for congested links to become available. Round trip time (RTT) is the time it takes for a packet to travel from the sender to the receiver and back. The transmission time of the object (O/R) refers to the time it takes to transmit the data object. Therefore, all of these components contribute to the overall latency in the dynamic congestion windows model.

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  • 48. 

    1. When a UDP segment arrives to a host, in order to direct the segment to the appropriate socket, the OS uses

    • The destination port number

    • The source port number

    • The source IP address

    • All of the above

    Correct Answer
    A. The destination port number
    Explanation
    When a UDP segment arrives at a host, the operating system (OS) uses the destination port number to direct the segment to the appropriate socket. The destination port number is a unique identifier that specifies which application or service on the host should receive the incoming segment. The source port number and source IP address are not used by the OS for this purpose. Therefore, the correct answer is the destination port number.

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  • 49. 

    1. Twisted-pair copper wire is no longer present in computer networks.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because twisted-pair copper wire is still widely used in computer networks. It is commonly used for Ethernet connections and provides a reliable and cost-effective means of transmitting data.

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Quiz Review Timeline (Updated): Mar 20, 2023 +

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

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 19, 2019
    Quiz Created by
    Daniyar

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