Open System Interconnect Layer Quiz 3dx5xn Vol. 2
Questions and Answers
- 1.
(201) What layer of the Open System Interconnect model defines the electrical, mechanical, procedural, and functional specifications for links between communicating network systems?
- A.
Physical
- B.
Data Link
- C.
Network
- D.
Transport
Correct Answer
A. pHysicalExplanation
The correct answer is Physical. The Physical layer of the OSI model is responsible for defining the electrical, mechanical, procedural, and functional specifications for links between communicating network systems. It deals with the physical transmission of data and includes specifications for cables, connectors, and other hardware components.Rate this question:
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- 2.
(201) The Institute of Electrical and Electronics Engineers divide the Open System Interconnect Data Link Layers into what two sublayers?
- A.
High Level Data Link Control and Synchronous Data Link Control
- B.
Logical Link Control and Media Access Control
- C.
Distance Vector and Link State
- D.
RS–232 and RS–530
Correct Answer
B. Logical Link Control and Media Access ControlExplanation
The correct answer is Logical Link Control and Media Access Control. The Open System Interconnect Data Link Layers are divided into these two sublayers. The Logical Link Control (LLC) sublayer is responsible for error control, flow control, and framing of data packets. It also provides services to the network layer. The Media Access Control (MAC) sublayer is responsible for controlling access to the physical media, such as Ethernet or Wi-Fi. It handles addressing and transmission of data packets onto the network.Rate this question:
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- 3.
(201) At what Open System Interconnect layer do network switches and bridges operate?
- A.
Network
- B.
Physical
- C.
Data Link
- D.
Transport
Correct Answer
C. Data LinkExplanation
Network switches and bridges operate at the Data Link layer of the Open System Interconnect (OSI) model. The Data Link layer is responsible for the reliable transfer of data between nodes on a network. Network switches and bridges use MAC addresses to direct data packets within a local area network (LAN). They examine the destination MAC address of incoming packets and forward them to the appropriate port based on the MAC address table. Therefore, the correct answer is Data Link.Rate this question:
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- 4.
(201) At what Open System Interconnect layer do routers operate?
- A.
Network
- B.
Physical
- C.
Data Link
- D.
Transport
Correct Answer
A. NetworkExplanation
Routers operate at the Network layer of the Open System Interconnect (OSI) model. The Network layer is responsible for logical addressing and routing of data packets across different networks. Routers use the information in the network layer headers, such as IP addresses, to determine the best path for forwarding packets to their destination. They make decisions based on routing tables and protocols like OSPF or BGP. By operating at the Network layer, routers facilitate communication between different networks and enable the internet to function effectively.Rate this question:
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- 5.
(201) At what Open System Interconnect layer are common data compression and encryption schemes used?
- A.
Application
- B.
Session
- C.
Presentation
- D.
Transport
Correct Answer
C. PresentationExplanation
Common data compression and encryption schemes are used at the Presentation layer of the Open System Interconnect (OSI) model. The Presentation layer is responsible for data formatting, encryption, and compression before it is transmitted over the network. This layer ensures that the data is in a format that can be understood by the receiving device and also provides security by encrypting the data. Therefore, it is at the Presentation layer where common data compression and encryption schemes are implemented.Rate this question:
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- 6.
(201) What Open System Interconnect layer is closest to the end user?
- A.
Application
- B.
Session
- C.
Presentation
- D.
Transport
Correct Answer
A. ApplicationExplanation
The Application layer is closest to the end user in the Open System Interconnect (OSI) model. This layer provides services directly to the user, such as email, web browsing, and file transfer. It is responsible for interpreting and presenting data in a format that is understandable to the user. The Application layer interacts with the lower layers of the OSI model to establish connections and ensure reliable data transfer.Rate this question:
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- 7.
(201) What is a formal set of rules and conventions that govern how computers exchange information over a network medium?
- A.
Specification
- B.
Standard
- C.
Etiquette
- D.
Protocol
Correct Answer
D. ProtocolExplanation
A protocol is a formal set of rules and conventions that govern how computers exchange information over a network medium. It defines the format, timing, sequencing, and error control of data transmission. Protocols ensure that data is transmitted reliably and efficiently between devices connected to a network. They provide a common language and guidelines for communication, allowing different devices and systems to understand and interact with each other effectively.Rate this question:
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- 8.
(202) What topology defines the layout of a network’s devices and media?
- A.
Physical
- B.
Logical
- C.
Star
- D.
Hybrid
Correct Answer
A. pHysicalExplanation
The correct answer is physical because the physical topology refers to the physical arrangement of devices and media in a network. It describes how the devices are connected and the physical layout of cables, connectors, and other physical components. This includes the placement of devices such as routers, switches, and servers, as well as the physical connections between them using cables or wireless links. The physical topology is important for understanding the actual physical structure of a network and how devices are physically interconnected.Rate this question:
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- 9.
(202) What topology defines the way in which devices communicate, and data is transmitted, throughout the network?
- A.
Physical
- B.
Logical
- C.
Star
- D.
Hybrid
Correct Answer
B. LogicalExplanation
Logical topology refers to the way in which devices communicate and data is transmitted in a network. It defines the logical connections between devices, regardless of their physical location. This includes the paths that data takes from one device to another, the protocols used for communication, and the logical structure of the network. Unlike physical topology, which focuses on the physical layout of devices and cables, logical topology is concerned with the conceptual layout of the network. It helps in understanding how devices are interconnected and how data flows within the network.Rate this question:
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- 10.
(202) What topology consists of devices connected to a common, shared cable?
- A.
Bus
- B.
Ring
- C.
Star
- D.
Hybrid
Correct Answer
A. BusExplanation
Bus topology consists of devices connected to a common, shared cable. In this topology, all devices are connected to a single cable, which acts as a backbone. Each device on the network can transmit data onto the cable, and all other devices on the network receive that data. This type of topology is relatively simple and inexpensive to set up, but if the main cable fails, the entire network can be affected.Rate this question:
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- 11.
(202) What topology consists of cable segments from each computer connected to a centralized component?
- A.
Bus
- B.
Ring
- C.
Star
- D.
Hybrid
Correct Answer
C. StarExplanation
In a star topology, each computer is connected to a centralized component, such as a switch or hub, through individual cable segments. This centralized component acts as a central point of communication, allowing data to be transmitted between computers. This topology is commonly used in Ethernet networks and provides better performance and reliability compared to bus or ring topologies, as a single point of failure does not affect the entire network.Rate this question:
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- 12.
(202) What topology combines two or more different physical topologies in a single network?
- A.
Bus
- B.
Ring
- C.
Star
- D.
Hybrid
Correct Answer
D. HybridExplanation
A hybrid topology combines two or more different physical topologies in a single network. This means that different sections of the network may be connected using different types of topologies such as bus, ring, or star. This allows for more flexibility and scalability in the network design, as different sections can be configured in the most suitable way for their specific requirements.Rate this question:
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- 13.
(203) Which network protocol has the Department of Defense chosen as its standard to govern the flow of information?
- A.
AppleTalk
- B.
NetBios Extended User Interface
- C.
Transport Control Protocol/Internet Protocol
- D.
Internetwork Packet Exchange/ Sequenced Packet Exchange
Correct Answer
C. Transport Control Protocol/Internet ProtocolExplanation
The Department of Defense has chosen the Transport Control Protocol/Internet Protocol (TCP/IP) as its standard network protocol to govern the flow of information. TCP/IP is a suite of protocols that enables communication between devices on the internet. It provides reliable and secure transmission of data packets, ensuring that information is delivered accurately and efficiently across networks. TCP/IP has become the standard protocol for internet communication and is widely used in various industries, including government and military organizations.Rate this question:
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- 14.
(203) What Transmission Control Protocol/Internet Protocol network layer protocol provides the service of matching a known IP address for a destination device to a Media Access Control address?
- A.
Internet Protocol
- B.
Address Resolution Protocol
- C.
Reverse Address Resolution Protocol
- D.
Internet Control Message Protocol
Correct Answer
B. Address Resolution ProtocolExplanation
The correct answer is Address Resolution Protocol. The Address Resolution Protocol (ARP) is used to match a known IP address for a destination device to a Media Access Control (MAC) address. ARP is responsible for resolving IP addresses to MAC addresses so that data can be properly transmitted over the network.Rate this question:
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- 15.
(203) What Transmission Control Protocol/Internet Protocol network layer protocol provides the IP address for a device that knows its own MAC address?
- A.
Internet Protocol
- B.
Address Resolution Protocol
- C.
Reverse Address Resolution Protocol
- D.
Internet Control Message Protocol
Correct Answer
C. Reverse Address Resolution ProtocolExplanation
The Reverse Address Resolution Protocol (RARP) is a network layer protocol that provides the IP address for a device that knows its own MAC address. RARP allows a device to send its MAC address to a RARP server and request its corresponding IP address. This is useful in situations where a device does not have a configured IP address and needs to obtain one dynamically.Rate this question:
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- 16.
(203) What Transmission Control Protocol/Internet Protocol network layer protocol provides messaging that can help with troubleshooting?
- A.
Internet Protocol
- B.
Address Resolution Protocol
- C.
Reverse Address Resolution Protocol
- D.
Internet Control Message Protocol
Correct Answer
D. Internet Control Message ProtocolExplanation
The Internet Control Message Protocol (ICMP) is a network layer protocol that provides messaging capabilities to help with troubleshooting. ICMP messages are used to report errors and provide diagnostic information, such as unreachable hosts or network congestion. By using ICMP, network administrators can identify and resolve network issues more effectively.Rate this question:
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- 17.
(203) What Transmission Control Protocol/Internet Protocol transport layer protocol provides reliable data delivery services?
- A.
Internet Protocol
- B.
User Datagram Protocol
- C.
Transmission Control Protocol
- D.
Internet Control Message Protocol
Correct Answer
C. Transmission Control ProtocolExplanation
Transmission Control Protocol (TCP) provides reliable data delivery services. TCP is a connection-oriented protocol that ensures the reliable and ordered delivery of data packets over the Internet. It uses acknowledgments and retransmission mechanisms to guarantee that data is delivered without errors or loss. TCP also handles flow control and congestion control to prevent network congestion and optimize data transmission. It is widely used for applications that require reliable data transfer, such as web browsing, email, and file transfer.Rate this question:
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- 18.
(203) What application within Transmission Control Protocol/Internet Protocol is used to send and receive files via TCP?
- A.
File Transfer Protocol
- B.
Trivial File Transfer Protocol
- C.
Simple Mail Transfer Protocol
- D.
HyperText Transfer Protocol
Correct Answer
A. File Transfer ProtocolExplanation
File Transfer Protocol (FTP) is the correct answer because it is the application within TCP/IP that is specifically designed for sending and receiving files. FTP allows users to transfer files between a client and a server over a network. It provides a set of commands that allow users to navigate through directories, upload and download files, and manage file permissions. FTP operates on TCP, which ensures reliable and ordered delivery of data packets.Rate this question:
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- 19.
(204) What type of network connects networks that are typically separated by geographical distances between cities, states, countries, or around the world?
- A.
Local Area Network
- B.
Wide Area Network
- C.
Virtual Private Network
- D.
Metropolitan Area Network
Correct Answer
B. Wide Area NetworkExplanation
A wide area network (WAN) is a type of network that connects networks that are typically separated by geographical distances between cities, states, countries, or around the world. Unlike a local area network (LAN), which connects devices within a limited area such as a building or campus, a WAN allows for long-distance communication and connects multiple LANs together. A WAN often utilizes public or private telecommunications infrastructure to transmit data between different locations, making it suitable for organizations with multiple branches or offices spread across different regions.Rate this question:
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- 20.
(204) What type of network makes use of tunneling and security protocols to enables a group of two or more computer systems to communicate over the public Internet?
- A.
Local Area Network
- B.
Wide Area Network
- C.
Virtual Private Network
- D.
Metropolitan Area Network
Correct Answer
C. Virtual Private NetworkExplanation
A Virtual Private Network (VPN) is a type of network that utilizes tunneling and security protocols to enable communication between two or more computer systems over the public Internet. It creates a secure and encrypted connection, allowing users to access resources on a private network remotely. VPNs are commonly used by organizations to ensure secure communication and data transfer between remote locations or employees working from home.Rate this question:
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- 21.
(204) Which is a common port that contains Hyper Text Transfer Protocol servers and proxies?
- A.
Port 80
- B.
Port 110
- C.
Port 443
- D.
Port 8080
Correct Answer
D. Port 8080Explanation
Port 8080 is commonly used for HTTP servers and proxies. While Port 80 is the default port for HTTP, Port 8080 is often used as an alternative when the default port is already in use or blocked. It allows for the same HTTP communication but on a different port number. Therefore, Port 8080 is a common port for hosting HTTP servers and proxies.Rate this question:
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- 22.
(205) How many bits are in an IPv4 address?
- A.
16 bits
- B.
32 bits
- C.
64 bits
- D.
128 bits
Correct Answer
B. 32 bitsExplanation
An IPv4 address is made up of 32 bits. This means that there are 2^32 possible unique addresses in the IPv4 address space. Each bit in the address can be either 0 or 1, resulting in a total of 4,294,967,296 unique addresses. This addressing scheme is used to identify and locate devices on a network using the Internet Protocol version 4.Rate this question:
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- 23.
(205) Instead of using binary, how are IPv4 addresses expressed to be more user-friendly?
- A.
Colon Hexadecimal Format
- B.
Dotted Decimal Notation
- C.
Hexadecimal
- D.
Octal
Correct Answer
B. Dotted Decimal NotationExplanation
IPv4 addresses are expressed in dotted decimal notation to make them more user-friendly. In this format, the address is divided into four octets, each separated by a dot. Each octet represents a decimal number ranging from 0 to 255. This format is easier for users to read and understand compared to binary or hexadecimal representation.Rate this question:
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- 24.
(205) Using a range of 1–126 in the first octet of an IPv4 address, what class does it belong to?
- A.
Class A
- B.
Class B
- C.
Class C
- D.
Class D
Correct Answer
A. Class AExplanation
IPv4 addresses are divided into different classes based on the range of the first octet. Class A addresses have a range of 1-126 in the first octet. Therefore, an IPv4 address with a range of 1-126 in the first octet belongs to Class A.Rate this question:
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- 25.
(205) What IPv4 class address is used for networks with about 250 nodes?
- A.
Class C
- B.
Class D
- C.
Class E
- D.
Class F
Correct Answer
A. Class CExplanation
Class C is the correct answer because it is designed for networks with approximately 250 nodes. Class C addresses have a default subnet mask of 255.255.255.0, allowing for up to 254 hosts on the network. Class D addresses are used for multicast purposes, Class E addresses are reserved for experimental use, and Class F addresses are not defined in the IPv4 standard. Therefore, Class C is the most appropriate choice for a network with about 250 nodes.Rate this question:
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- 26.
(205) What IPv4 class address is used for multicast addressing?
- A.
Class C
- B.
Class D
- C.
Class E
- D.
Class F
Correct Answer
B. Class DExplanation
Class D is the correct answer because it is the IPv4 class address used for multicast addressing. Multicast addressing allows a single packet to be sent to multiple recipients simultaneously. Class D addresses range from 224.0.0.0 to 239.255.255.255 and are reserved for multicast groups.Rate this question:
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- 27.
(205) What IPv4 reserved address is used for loop back?
- A.
0.0.0.0
- B.
127.0.0.1
- C.
207.55.157.255
- D.
255.255.255.255
Correct Answer
B. 127.0.0.1Explanation
The IPv4 reserved address used for loopback is 127.0.0.1. This address is reserved for testing network communication between the local host (the device itself) and is commonly referred to as the loopback address. When a packet is sent to this address, it is immediately returned back to the sender without being transmitted on the network. This allows applications to test network functionality without the need for an actual network connection.Rate this question:
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- 28.
(205) What is a mechanism that allows a network device to divide an IP address into a network and host number?
- A.
Subnet mask
- B.
Broadcast
- C.
Multicast
- D.
Subnet
Correct Answer
A. Subnet maskExplanation
A subnet mask is a mechanism that allows a network device to divide an IP address into a network and host number. It is used to determine which part of the IP address represents the network and which part represents the host. By using a subnet mask, a network device can identify the network to which an IP address belongs and properly route the data packets within the network.Rate this question:
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- 29.
(205) What is the default classful subnet mask on class B networks?
- A.
255.255.0.0
- B.
255.255.240.0
- C.
255.255.255.0
- D.
255.255.255.224
Correct Answer
A. 255.255.0.0Explanation
The default classful subnet mask for class B networks is 255.255.0.0. This subnet mask allows for a network portion of 16 bits and a host portion of 16 bits. It is used to divide the IP address into network and host portions, with the first two octets representing the network portion and the last two octets representing the host portion. This subnet mask provides a large number of possible networks and hosts within each network.Rate this question:
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- 30.
(205) What method borrows bits from the host field of an IP address to create a subnet?
- A.
Classful Subnet Masking
- B.
Classless Inter-Domain Routing
- C.
Virtual Private Networking
- D.
Virtual Local Area Networking
Correct Answer
B. Classless Inter-Domain RoutingExplanation
Classless Inter-Domain Routing (CIDR) is a method that borrows bits from the host field of an IP address to create a subnet. This allows for more efficient allocation of IP addresses by allowing for variable length subnet masks. With CIDR, the traditional classful subnet masking is replaced, and networks can be divided into smaller subnets based on their specific needs, rather than being limited to fixed class boundaries.Rate this question:
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- 31.
(206) Instead of using binary, how are IPv6 addresses expressed to be more user-friendly?
- A.
Colon Hexadecimal Format
- B.
Dotted Decimal Notation
- C.
Hexadecimal
- D.
Octal
Correct Answer
A. Colon Hexadecimal FormatExplanation
IPv6 addresses are expressed in colon hexadecimal format to make them more user-friendly. In this format, the address is divided into eight groups of four hexadecimal digits separated by colons. This format allows for a larger address space compared to IPv4 and is easier for users to read and understand. The use of hexadecimal digits also simplifies the representation of large numbers, making it more convenient for users to work with IPv6 addresses.Rate this question:
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- 32.
(206) What notation is expressed in leading zero compression for IPv6?
- A.
1234:1234:0:0:1234:0:0:1234
- B.
10AB::3:0:1234:5678
- C.
255.255.255.255
- D.
127.0.0.1
Correct Answer
A. 1234:1234:0:0:1234:0:0:1234Explanation
Both IPv4 and IPv6 addresses can be expressed in leading zero compression notation. In this notation, consecutive blocks of zeros can be replaced with a double colon (::). The given answer, 1234:1234:0:0:1234:0:0:1234, is an example of leading zero compression in IPv6 notation. The consecutive blocks of zeros in the middle are compressed using the double colon (::) notation.Rate this question:
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- 33.
(206) What notation is expressed in zero compression for IPv6?
- A.
1234:1234:0:0:1234:0:0:1234
- B.
10AB::3:0:1234:5678
- C.
255.255.255.255
- D.
127.0.0.1
Correct Answer
B. 10AB::3:0:1234:5678Explanation
The correct answer is an example of zero compression notation for IPv6. In this notation, consecutive groups of zeros are replaced with a double colon (::), indicating that there are multiple groups of zeros. This allows for a more concise representation of the IPv6 address. In the given answer, the double colon is used to represent the consecutive groups of zeros between 10AB and 3, and between 3 and 1234:5678.Rate this question:
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- 34.
(206) What Unicast address scope operates within a network segment, and will not originate from, or be destined to, an interface that requires a router to direct traffic?
- A.
Site-local
- B.
Link-local
- C.
Aggregatable Local
- D.
Aggregatable Global
Correct Answer
B. Link-localExplanation
Link-local addresses have a scope that operates within a network segment and does not require a router to direct traffic. These addresses are automatically assigned to interfaces when no other address is available, and they are used for communication within the local network segment. Link-local addresses are not routable and cannot be used to communicate outside of the network segment. Therefore, they meet the criteria mentioned in the question.Rate this question:
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- 35.
(206) What Unicast address scope is designed to be private, internally routable addresses that do not route outside the site?
- A.
Site-local
- B.
Link-local
- C.
Aggregatable Local
- D.
Aggregatable Global
Correct Answer
A. Site-localExplanation
The correct answer is Site-local. Site-local addresses are designed to be private and internally routable within a specific site or organization. These addresses are not meant to be routed outside of the site, ensuring that they remain private and isolated. They are typically used for internal communication within a specific network or organization.Rate this question:
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- 36.
(206) What Unicast address scope is publicly accessible with the Network ID portion of the address broken up into different areas allowing for hierarchical design and allocation?
- A.
Site-local
- B.
Link-local
- C.
Aggregatable Local
- D.
Aggregatable Global
Correct Answer
D. Aggregatable GlobalExplanation
Aggregatable Global is the correct answer because it refers to a unicast address scope that is publicly accessible and allows for hierarchical design and allocation. This means that the Network ID portion of the address can be broken up into different areas, enabling efficient management and allocation of IP addresses.Rate this question:
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- 37.
(207) The computing part of the computer is the central processing unit, also called the
- A.
Control unit
- B.
Minicomputer
- C.
Microprocessor
- D.
Arithmetic logic unit
Correct Answer
C. MicroprocessorExplanation
The computing part of a computer is known as the microprocessor. The microprocessor is responsible for executing instructions and performing calculations. It is often referred to as the "brain" of the computer as it controls and coordinates all the activities of the computer system. The control unit, arithmetic logic unit, and minicomputer are all components that are part of the overall computer system, but the microprocessor specifically refers to the central processing unit responsible for processing data and executing instructions.Rate this question:
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- 38.
(207) What two main components make up the central processing unit?
- A.
Control unit and read-only memory
- B.
Control unit and arithmetic logic unit
- C.
Arithmetic logic unit and read-only memory
- D.
Arithmetic logic unit and random access memory
Correct Answer
B. Control unit and arithmetic logic unitExplanation
The central processing unit (CPU) is composed of two main components: the control unit and the arithmetic logic unit (ALU). The control unit is responsible for managing and coordinating the activities of the CPU, including fetching instructions from memory and executing them. The ALU performs mathematical and logical operations, such as addition, subtraction, and comparison, on the data stored in the CPU. Together, the control unit and ALU work together to carry out the instructions of a computer program.Rate this question:
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- 39.
(207) What is the type of memory that retains data after power is removed or lost?
- A.
Volatile
- B.
Nonvolatile
- C.
Secured
- D.
Unsecured
Correct Answer
B. NonvolatileExplanation
Nonvolatile memory is the type of memory that retains data even after power is removed or lost. Unlike volatile memory, which loses its data when power is disconnected, nonvolatile memory stores information permanently. This type of memory is commonly used in devices such as hard drives, solid-state drives, and flash memory. It allows for persistent storage of data, ensuring that information is not lost even during power outages or system shutdowns.Rate this question:
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- 40.
(207) Which landline transmission medium is the primary carrier of voice communications?
- A.
Twisted pair cable
- B.
Fiber optic cable
- C.
Coaxial cable
- D.
Twinax cable
Correct Answer
A. Twisted pair cableExplanation
Twisted pair cable is the primary carrier of voice communications because it is a widely used and cost-effective transmission medium. It consists of two insulated copper wires twisted together, which helps to reduce interference and improve signal quality. Twisted pair cable is capable of carrying analog voice signals efficiently over short to medium distances, making it ideal for telephone systems and voice communication applications. Fiber optic cable, coaxial cable, and twinax cable are also used for transmission, but they are more commonly used for data and video transmission rather than voice communications.Rate this question:
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- 41.
(207) An optical communications system is comprised of a
- A.
Transmitter, cable, and receiver
- B.
Transmitter, cable, and logic analyzer
- C.
Transmitter, transmission medium, and logic analyzer
- D.
Transmitter, transmission medium, and protocol analyzer
Correct Answer
A. Transmitter, cable, and receiverExplanation
An optical communications system consists of a transmitter, cable, and receiver. The transmitter is responsible for converting electrical signals into optical signals, which are then transmitted through the cable. The cable acts as the transmission medium, allowing the optical signals to travel from the transmitter to the receiver. The receiver then converts the optical signals back into electrical signals for further processing. Therefore, the correct answer is transmitter, cable, and receiver.Rate this question:
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- 42.
(207) Which of the following is not one of the three advantages to using wireless technology?
- A.
Ease of installation
- B.
Lower Cost
- C.
Safety
- D.
Mobility
Correct Answer
C. SafetyExplanation
Wireless technology offers several advantages, including ease of installation, lower cost, and mobility. However, safety is not one of these advantages. While wireless technology can provide convenience and flexibility, it also comes with potential security risks and vulnerabilities. Therefore, safety is not considered a primary advantage of using wireless technology.Rate this question:
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- 43.
(207) The ability to move about without being tethered by wires in wireless technology is called
- A.
Mobility
- B.
Ease of installations
- C.
War driving
- D.
Motion capture technology
Correct Answer
A. MobilityExplanation
The correct answer is mobility because wireless technology allows devices to move freely without being connected by wires. This enables users to have flexibility and freedom of movement while still being able to access and use the technology.Rate this question:
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- 44.
(207) Which of the following is not one the four security threats to Wireless Local Area Network?
- A.
Rogue Access Points
- B.
Direct Connections
- C.
War Drivers
- D.
Hackers
Correct Answer
B. Direct ConnectionsExplanation
Direct Connections is not one of the four security threats to Wireless Local Area Network. Rogue Access Points, War Drivers, and Hackers are all potential security threats to a WLAN. Rogue Access Points refer to unauthorized access points that are set up by individuals without proper authorization. War Drivers are individuals who drive around looking for unsecured wireless networks to exploit. Hackers are individuals who attempt to gain unauthorized access to a network. However, Direct Connections does not pose a specific security threat to WLANs as it refers to a direct physical connection to a device, rather than a wireless connection.Rate this question:
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- 45.
(207) Who is an authorized client that may unknowingly or maliciously help outside parties gain access to a network?
- A.
Auditor
- B.
Employee
- C.
War Driver
- D.
Hacker
Correct Answer
B. EmployeeExplanation
An employee is an authorized client who may unknowingly or maliciously help outside parties gain access to a network. As an authorized user, an employee has legitimate access to the network and can potentially misuse their privileges to assist external individuals or groups in gaining unauthorized access. This could be done either unintentionally, such as through negligence or lack of awareness of security protocols, or intentionally, as an insider threat or through collusion with external attackers. Therefore, employees pose a significant risk to network security if their actions are not properly monitored and controlled.Rate this question:
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- 46.
(207) What organization developed several wireless standards to meet the demands of security, speed, and flexibility of today’s wireless networks?
- A.
Institute of Electrical Electronics Engineers
- B.
International Organization for Standardization
- C.
Internet assigned numbers authority
- D.
National Science Foundation network
Correct Answer
A. Institute of Electrical Electronics EngineersExplanation
The Institute of Electrical Electronics Engineers (IEEE) developed several wireless standards to meet the demands of security, speed, and flexibility of today's wireless networks. These standards include popular ones like IEEE 802.11 (Wi-Fi) and IEEE 802.15 (Bluetooth). The IEEE is a global professional organization that focuses on advancing technology in various fields, including wireless communications. Through their efforts, they have played a significant role in shaping the wireless industry and ensuring compatibility and interoperability among different wireless devices and networks.Rate this question:
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- 47.
(208) How many peripherals can a Universal Serial Bus handle at once?
- A.
127
- B.
128
- C.
227
- D.
228
Correct Answer
A. 127Explanation
A Universal Serial Bus (USB) can handle up to 127 peripherals at once. This is because USB devices are assigned unique addresses, and the USB protocol supports up to 127 addressable devices. Therefore, the correct answer is 127.Rate this question:
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- 48.
(208) How many devices can connect to a FireWire bus?
- A.
63
- B.
64
- C.
65
- D.
66
Correct Answer
A. 63Explanation
A FireWire bus can support up to 63 devices. This is because the FireWire standard allows for a maximum of 63 devices to be connected in a daisy-chain configuration. Each device on the bus has a unique identifier, and the bus can provide power and data communication to all connected devices. Therefore, the correct answer is 63.Rate this question:
-
- 49.
(209) What do you apply across Liquid Crystal Display material to change the alignment and light polarizing property?
- A.
Current
- B.
Voltage
- C.
Resistance
- D.
Inductance
Correct Answer
B. VoltageExplanation
Voltage is applied across Liquid Crystal Display (LCD) material to change the alignment and light polarizing property. The application of voltage causes the liquid crystal molecules to align in a specific direction, which in turn changes the orientation of the light passing through the material. This change in alignment and polarization allows for the manipulation of light to create the desired display on an LCD screen.Rate this question:
-
- 50.
(210) What is a Data Link layer network device that logically separates a single network into two segments or collision domains in Ethernet networks?
- A.
Hub
- B.
Bridge
- C.
Switch
- D.
Router
Correct Answer
B. BridgeExplanation
A bridge is a Data Link layer network device that logically separates a single network into two segments or collision domains in Ethernet networks. It operates by examining the MAC addresses of the incoming frames and making forwarding decisions based on that information. By doing so, a bridge helps to reduce network congestion and improve overall network performance by preventing unnecessary collisions and allowing for more efficient communication between devices connected to different segments.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Sep 07, 2012Quiz Created by
Toosoul
Toughest Networking Trivia Questions Quiz! Practice Test
Toughest Networking Trivia Questions Quiz! Practice Test
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Test your Computer Networking Knowledge! Ultimate Trivia Quiz
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