Computer networking MCQ – Change your future

361. IPV4 Address is :

Correct Answer: Correct answer is: (C) 32 bit.

Exam Relevance: CCNA, CompTIA Network+, AP Computer Science Principles

Difficulty: Easy

Concept notes: An IPv4 address is a 32-bit number that uniquely identifies a device on a network.

Common Mistakes: Students may confuse IPv4 with IPv6, which uses 128 bits.

Explanations: IPv4 addresses are 32 bits long, which allows for a total of 2^32 unique addresses. This format is widely used in current internet protocols.

Option Analysis:

Option A: 8 bits is insufficient for the number of unique addresses required for IPv4.
Option B: 16 bits is also insufficient for the number of unique addresses required for IPv4.
Option C: 32 bits is the correct length for an IPv4 address.
Option D: 64 bits is the length of an IPv6 address, not an IPv4 address.

362. Which of the following is the address used to uniquely identify every device on the internet?

Correct Answer: Correct answer is: (C) IP address.

Exam Relevance: CCNA, CompTIA Network+, AP Computer Science Principles

Difficulty: Easy

Concept notes: An IP address is a unique identifier for devices on the internet.

Common Mistakes: Students may confuse IP address with MAC address, which is a unique identifier for network interfaces but not used to identify devices on the internet.

Explanations: An IP address is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. It uniquely identifies the device on the internet, allowing data to be routed to and from it. This makes it the correct choice for uniquely identifying devices on the internet.

Option Analysis:

Option A: Machine address is not a standard term for identifying devices on the internet.
Option B: Postal address is used for physical mail delivery and is not related to internet device identification.
Option C: IP address is the correct term for uniquely identifying devices on the internet.
Option D: MAC address is a unique identifier for network interfaces but is not used to identify devices on the internet.

Mnemonic: IP for Internet Path

363. Mapping a name to an address or an address to a name is called

Correct Answer: Correct answer is: (C) Name-address Resolution.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Moderate

Concept notes: Name-address resolution is the process of mapping a name to an address or an address to a name, typically used in networking and computing.

Common Mistakes: Students may confuse name-address resolution with other network processes such as name generation or abbreviation, which are not related to the mapping process.

Explanations: Name-address resolution is the correct term for the process of mapping a name to an address or an address to a name. This process is crucial in networking, where domain names are resolved to IP addresses and vice versa. The other options do not accurately describe this mapping process.

Option Analysis:

Option A: Name-address Generations is not a standard term and does not describe the mapping process.
Option B: Name-address Abbreviations refers to shortening names, not mapping them to addresses.
Option C: Name-address Resolution correctly describes the process of mapping names to addresses or addresses to names.
Option D: Name-address Information is too vague and does not specifically describe the mapping process.

Mnemonic: NAR: Name-Address Resolution

364. Bluetooth is a wireless

Correct Answer: Correct answer is: (C) LAN technology.

Exam Relevance: Computer Networks, Data Communication, IT Fundamentals

Difficulty: Easy

Concept notes: Bluetooth is a wireless technology used for short-range communication between devices, which aligns with the characteristics of a Local Area Network (LAN).

Common Mistakes: Students may confuse Bluetooth with other wireless technologies like Wi-Fi, which can also be used in LANs, but Bluetooth is specifically designed for short-range communication.

Explanations: Bluetooth operates over short distances, typically within a range of 10 meters, making it suitable for connecting devices within a small area, such as a room or office. This aligns with the definition of a Local Area Network (LAN), which is a network that connects devices within a limited geographical area, such as a home, office, or school. Therefore, Bluetooth is classified as a LAN technology.

Option Analysis:

Option A: Bluetooth is not a Wide Area Network (WAN) technology, as WANs cover large geographical areas, such as cities or countries.
Option B: Bluetooth is not a Metropolitan Area Network (MAN) technology, as MANs cover a larger area than LANs but smaller than WANs, typically a city or large campus.
Option C: Bluetooth is a LAN technology because it is designed for short-range communication within a limited area.
Option D: Bluetooth is not classified as all of the above, as it specifically fits the criteria for a LAN technology.

365. File transfer protocol (FTP) is built on.....architecture

Correct Answer: Correct answer is: (B) Client server.

Exam Relevance: CISSP, CompTIA Network+, CCNA

Difficulty: Easy

Concept notes: FTP operates on a client-server model where a client requests services from a server.

Common Mistakes: Students may confuse FTP with peer-to-peer networks, which do not involve a central server.

Explanations: FTP is built on a client-server architecture. In this model, a client initiates a connection to a server to request and receive files. The server is responsible for managing the file storage and responding to client requests. This architecture ensures a structured and controlled environment for file transfers, distinguishing it from peer-to-peer networks.

Option Analysis:

Option A: FTP does not use a peer-to-peer architecture, which lacks a central server.
Option B: FTP uses a client-server architecture, where clients request services from a server.
Option C: FTP does not use both architectures; it exclusively uses client-server.
Option D: FTP is a well-defined protocol and is not none of the above.

Mnemonic: FTP: Files Transfer Protocol, Server Serves, Client Connects

366. Jitter is introduced in real-time data by the.....

Correct Answer: Correct answer is: (B) Delay between packets.

Exam Relevance: Computer Networks, Data Communications, Network Engineering

Difficulty: Moderate

Concept notes: Jitter in real-time data transmission refers to the variation in the delay of received packets. This delay inconsistency can affect the quality of real-time applications like video conferencing or VoIP.

Common Mistakes: Students often confuse jitter with packet loss, which is a different issue related to data transmission errors.

Explanations: Jitter is caused by the delay between packets arriving at their destination. This delay can vary due to network congestion, routing changes, or other network conditions. The delay between packets is a key factor in introducing jitter, as it affects the consistency of data delivery in real-time applications.

Option Analysis:

Option A: Error caused during transmission is not the primary cause of jitter. While errors can affect data transmission, jitter specifically refers to the delay variation.
Option B: Delay between packets is the correct cause of jitter. This delay variation is what defines jitter in real-time data transmission.
Option C: Both a and b is incorrect because error during transmission is not the primary cause of jitter.
Option D: None of the above is incorrect because delay between packets is a valid cause of jitter.

367. An Internet Service Provider (ISP):

Correct Answer: Correct answer is: (C) Provides access to Internet.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: An Internet Service Provider (ISP) is a company that provides individuals and organizations with access to the Internet.

Common Mistakes: Students may confuse an ISP with a web browser or a web page, which are different components of Internet technology.

Explanations: An ISP is a company that offers services to connect users to the Internet. It provides the necessary infrastructure and services to enable users to access online resources, send and receive data, and communicate over the Internet. This makes option C the correct answer.

Option Analysis:

Option A: A Web page is a document on the Internet, not a service provider.
Option B: A Web browser is a software application used to access and navigate the Internet, not a service provider.
Option C: An ISP provides access to the Internet, which is the correct function.
Option D: Funding access to the Internet for third-world countries is not the primary function of an ISP.

368. Term is used to place packet in its route to its destination is called

Correct Answer: Correct answer is: (C) Forwarding.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Moderate

Concept notes: Forwarding is the process of moving a packet from one network segment to another based on the routing information.

Common Mistakes: Students may confuse forwarding with delivering, which is the final step where the packet reaches its destination.

Explanations: Forwarding is the term used to describe the process of moving a packet along its route to its destination. This involves examining the packet's destination address and using routing information to determine the next hop. The other options do not accurately describe this process.

Option Analysis:

Option A: Delayed refers to a packet being held up, not the process of moving it along its route.
Option B: Urgent is a priority level for packets, not the process of moving them.
Option C: Forwarding is the correct term for moving a packet along its route.
Option D: Delivering is the final step where the packet reaches its destination, not the process of moving it along the route.

369. Bluetooth is a type of

Correct Answer: Correct answer is: (B) Near-field wireless radio communication.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Bluetooth is a technology that enables wireless communication over short distances, typically within a range of a few meters.

Common Mistakes: Students may confuse Bluetooth with other wireless technologies or with memory storage devices.

Explanations: Bluetooth is a type of near-field wireless radio communication. It allows devices to connect and exchange data over short distances, typically within a range of 10 meters. This technology is commonly used for connecting devices such as smartphones, headphones, and computers.

Option Analysis:

Option A: Bluetooth is not a type of memory. Memory refers to storage devices or components in computing.
Option B: Bluetooth is a near-field wireless radio communication technology, which is the correct answer.
Option C: Bluetooth is not a Viking king. This is a historical figure and unrelated to technology.
Option D: Bluetooth is not an electric circuit. An electric circuit is a path through which electric current flows.

370. Voice privacy in GSM cellular telephone protocol is provided by

Correct Answer: Correct answer is: (A) A5/2 cipher.

Exam Relevance: Network Security, Computer Security, Information Security

Difficulty: Moderate

Concept notes: Voice privacy in GSM cellular telephones is provided by encryption algorithms. A5/2 is one such algorithm used for this purpose.

Common Mistakes: Students may confuse the different encryption algorithms used in GSM, such as A5/1, A5/2, and A5/3, leading to incorrect selection.

Explanations: In GSM, voice privacy is ensured through the use of encryption algorithms. A5/2 is a specific encryption algorithm used to protect voice communications. It is less secure than A5/1 but is still used in some regions. The question specifies that A5/2 is the correct cipher for voice privacy in GSM, and thus, the answer is A5/2 cipher.

Option Analysis:

Option A: A5/2 cipher is the correct encryption algorithm used for voice privacy in GSM.
Option B: B5/4 cipher is not a recognized encryption algorithm in GSM.
Option C: B5/6 cipher is not a recognized encryption algorithm in GSM.
Option D: B5/8 cipher is not a recognized encryption algorithm in GSM.

Mnemonic: A5/2: "A for A5, 2 for second cipher"

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Computer networking MCQ - Set 37

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