Computer networking MCQ

971. When there is more than one source, the..... identifier defines the mixer.

Correct Answer: Correct answer is: (A) Synchronization source.

Exam Relevance: Computer Networks, Data Communication, Network Engineering

Difficulty: Moderate

Concept notes: In a network environment with multiple sources, the synchronization source identifier is used to define the mixer. This ensures that the mixer can properly synchronize and combine the different sources.

Common Mistakes: Students may confuse the synchronization source with other identifiers like the contributor or timestamp, which do not define the mixer.

Explanations: The synchronization source identifier is crucial in defining the mixer in a network environment with multiple sources. It ensures that the mixer can synchronize and combine the different sources effectively. The synchronization source identifier is specifically designed to manage the synchronization process, making it the correct choice for defining the mixer.

Option Analysis:

Option A: Correct. The synchronization source identifier defines the mixer in a network environment with multiple sources.
Option B: Incorrect. The contributor does not define the mixer; it is a source of data or content.
Option C: Incorrect. The timestamp is used for time synchronization but does not define the mixer.
Option D: Incorrect. This option is not applicable as the synchronization source is the correct identifier.

Mnemonic: Sync Source, Mixer Master

972. A network that allows data to be transmitted from one device to another without cables or wires

Correct Answer: Correct answer is: (A) Wireless network.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: A wireless network allows data transmission between devices without the use of cables or wires.

Common Mistakes: Students may confuse wireless networks with other types of networks like cloud networks, which involve data storage rather than transmission.

Explanations: A wireless network enables devices to communicate and exchange data over radio waves or other wireless signals, eliminating the need for physical cables. This aligns with the description of a network that allows data to be transmitted from one device to another without cables or wires.

Option Analysis:

Option A: Correct. A wireless network fits the description provided.
Option B: Incorrect. A cloud network refers to data storage and services provided over the internet, not a method of data transmission between devices.
Option C: Incorrect. A local area network (LAN) typically uses cables for data transmission, although it can be wireless, the term itself does not specifically imply a wireless connection.
Option D: Incorrect. A near field network is a type of wireless network but is limited to very short distances, not fitting the general description provided.

973. A combination of rules and procedures that lets routers in internet inform each other of changes, is

Correct Answer: Correct answer is: (A) Routing protocols.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: Routing protocols are the rules and procedures that enable routers to communicate and share information about network topology and changes.

Common Mistakes: Students may confuse routing protocols with routing packets, which are the actual data units that travel through the network.

Explanations: Routing protocols are the mechanisms that allow routers to inform each other about changes in the network. They define the rules and procedures for routers to exchange routing information, such as the best paths to reach different destinations. This ensures that data packets are efficiently routed through the network.

Option Analysis:

Option A: Correct. Routing protocols are the combination of rules and procedures that enable routers to inform each other of changes in the network.
Option B: Incorrect. Routing packets are the data units that travel through the network, not the rules and procedures for communication.
Option C: Incorrect. Routing Path refers to the specific route a packet takes through the network, not the rules for communication.
Option D: Incorrect. Routing Plan is not a standard term in networking and does not refer to the rules and procedures for router communication.

974. What is a Domain Name?

Correct Answer: Correct answer is: (C) What we usually refer to as a web address.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: A domain name is a human-readable string that identifies a website or web service.

Common Mistakes: Students may confuse domain names with IP addresses, which are numerical identifiers.

Explanations: A domain name is a human-readable string that represents an IP address. It is what we typically use to access websites, such as www.example.com. This makes it easier for people to remember and use compared to numerical IP addresses.

Option Analysis:

Option A: A domain name is not a type of computer. It is a name used to identify a website.
Option B: While domain names are used to help computers find each other, they are not the numbers themselves. IP addresses are the numerical identifiers.
Option C: This is correct. A domain name is what we usually refer to as a web address, such as www.example.com.
Option D: A domain name is not the same as a MAC address, which is a unique identifier assigned to network interfaces for communications at the data link layer of a network segment.

Mnemonic: Domain Name = Web Address

975. It describes the configuration of a communication network?

Correct Answer: Correct answer is: (D) Topology.

Exam Relevance: Computer Networks, Data Communications, Network Fundamentals

Difficulty: Moderate

Concept notes: Topology refers to the arrangement of elements in a communication network, including the physical layout and the logical structure of the connections between devices.

Common Mistakes: Students may confuse topology with other network configurations such as protocols or standards, which are not directly related to the physical or logical layout of the network.

Explanations: Topology describes the configuration of a communication network, which includes the physical layout and the logical structure of the connections between devices. This makes it the correct answer as it directly addresses the configuration aspect of a network.

Option Analysis:

Option A: ARPA Network refers to the early version of the internet, not the configuration of a network.
Option B: Workgroup Network is a type of network configuration but does not describe the overall topology.
Option C: Ad Hoc Network is a type of network where devices communicate directly with each other without a central access point, but it does not describe the configuration of a network in general.
Option D: Topology is the correct term for describing the configuration of a communication network.

976. Minimum size of process data that can be encapsulated in a UDP datagram would be

Correct Answer: Correct answer is: (A) 0 bytes.

Exam Relevance: Computer Networks, Data Communications, Network Protocols

Difficulty: Very Easy

Concept notes: The minimum size of process data that can be encapsulated in a UDP datagram is 0 bytes. This is because UDP datagrams can be sent without any payload data, meaning the datagram can consist solely of the UDP header.

Common Mistakes: Students often confuse the minimum size of the UDP datagram with the size of the UDP header, which is 8 bytes. However, the payload can be 0 bytes.

Explanations: UDP datagrams can be sent with no payload data. The UDP header itself is 8 bytes, but the payload can be 0 bytes. Therefore, the minimum size of process data that can be encapsulated in a UDP datagram is 0 bytes.

Option Analysis:

Option A: Correct. The payload can be 0 bytes.
Option B: Incorrect. 4 bytes would imply a minimum payload size, which is not necessary.
Option C: Incorrect. 8 bytes is the size of the UDP header, not the payload.
Option D: Incorrect. 28 bytes is larger than the minimum payload size.

977. The 802.5 standard implements a way for preventing collisions on the network. How are collisions prevented when using this standard?

Correct Answer: Correct answer is: (B) Token passing.

Exam Relevance: CCNA, CompTIA Network+, CIW Network Specialist

Difficulty: Moderate

Concept notes: Token passing is a method used in local area networks (LANs) to manage access to the network medium, ensuring that only one device can transmit data at a time to prevent collisions.

Common Mistakes: Students may confuse token passing with CSMA/CD, which is used in Ethernet networks to detect and handle collisions.

Explanations: The 802.5 standard, also known as Token Ring, uses token passing to prevent collisions. In this method, a special frame called a token circulates around the network. Only the device that captures the token is allowed to transmit data. This ensures that only one device transmits at a time, thereby preventing collisions.

Option Analysis:

Option A: CSMA/CD is used in Ethernet networks to detect and handle collisions, not to prevent them. It is not used in Token Ring networks.
Option B: Token passing is the correct method used in Token Ring networks to prevent collisions by allowing only one device to transmit at a time.
Option C: Time sharing is a method used in operating systems to allocate CPU time to multiple processes, not a method for preventing collisions in networks.
Option D: Switched repeaters are used to extend the reach of a network by amplifying signals, not to prevent collisions.

Mnemonic: Token Ring, Token Pass, No Crash.

978. Logical ring topology is designed by

Correct Answer: Correct answer is: (B) IBM.

Exam Relevance: Networking exams, Computer Science exams, IT certifications

Difficulty: Easy

Concept notes: Logical ring topology is a network design where data travels in a circular path from one device to the next until it reaches its destination. This topology was designed by IBM.

Common Mistakes: Students may confuse the design of logical ring topology with other network topologies or with other companies that have contributed to networking technology.

Explanations: IBM designed the logical ring topology, which is a method of organizing network devices in a circular configuration. This design allows data to travel in a unidirectional path, ensuring efficient and reliable communication among devices.

Option Analysis:

Option A: HP did not design the logical ring topology.
Option B: IBM designed the logical ring topology.
Option C: Dell did not design the logical ring topology.
Option D: Apple did not design the logical ring topology.

979. In network addresses, each router has two

Correct Answer: Correct answer is: (A) Addresses.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: In network routing, each router typically has two addresses: one for the interface connected to the previous network segment and another for the interface connected to the next network segment.

Common Mistakes: Students may confuse the concept with subnet masks or IP blocks, which are different components of network configuration.

Explanations: Each router in a network has two addresses because it connects two different network segments. The first address is used for communication with the previous segment, and the second address is used for communication with the next segment. This allows the router to forward data packets between the two segments effectively.

Option Analysis:

Option A: Correct. Each router has two addresses, one for each network segment it connects.
Option B: Incorrect. Masks refer to subnet masks, which are not the same as addresses.
Option C: Incorrect. Blocks refer to IP address blocks, which are not the same as individual router addresses.
Option D: Incorrect. Segments refer to network segments, not the addresses that routers use.

980. In a..... protocol, the data section of a frame is a sequence of characters.

Correct Answer: Correct answer is: (B) Character-oriented.

Exam Relevance: Computer Networks, Data Communication, Network Protocols

Difficulty: Easy

Concept notes: In a character-oriented protocol, the data section of a frame is composed of a sequence of characters.

Common Mistakes: Students may confuse character-oriented protocols with bit-oriented protocols, where the data section is a sequence of bits rather than characters.

Explanations: Character-oriented protocols use characters as the basic unit of data. Each character is typically represented by a specific number of bits, such as 8 bits for an ASCII character. The data section in a frame of a character-oriented protocol is therefore a sequence of these characters. This is in contrast to bit-oriented protocols, where the data section is a sequence of bits without a specific character structure.

Option Analysis:

Option A: Bit-oriented protocols use bits as the basic unit of data, not characters.
Option B: Character-oriented protocols use characters as the basic unit of data, making this the correct answer.
Option C: The correct answer is not either (a) or (b), but specifically (b).
Option D: This option is incorrect as the correct answer is provided.

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Computer networking MCQ - Set 98

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