Computer networking MCQ

1531. The industry standard for LANs.

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

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

Difficulty: Easy

Concept notes: Ethernet is the most widely used standard for local area networks (LANs).

Common Mistakes: Students may confuse Ethernet with other networking protocols or technologies.

Explanations: Ethernet is the industry standard for LANs due to its widespread adoption, reliability, and scalability. It provides a robust framework for data transmission within a local network, making it the preferred choice for most organizations.

Option Analysis:

Option A: Ethernet is the correct answer as it is the industry standard for LANs.
Option B: P2P (Peer-to-Peer) is a network model, not a standard for LANs.
Option C: Gateway is a device that connects different networks, not a LAN standard.
Option D: TCP/IP is a protocol suite used for communication over the internet, not a LAN standard.

Mnemonic: E for Ethernet, E for Everywhere.

1532. The internet sends information in three main ways, what are they?

Correct Answer: Correct answer is: (A) Electricity, Light, Radiowaves.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: The internet transmits information using three primary methods: electricity, light, and radiowaves.

Common Mistakes: Students may confuse the methods of information transmission with other forms of energy or signals, such as soundwaves or mobile signals.

Explanations: The internet uses electricity to transmit data through copper wires, light to transmit data through fiber-optic cables, and radiowaves to transmit data wirelessly. These three methods are the fundamental ways in which information is sent over the internet.

Option Analysis:

Option A: Correct. Electricity, light, and radiowaves are the primary methods used for internet data transmission.
Option B: Incorrect. Soundwaves are not a primary method of internet data transmission.
Option C: Incorrect. Energy is a broad term and not specific to internet transmission methods. Wi-Fi is a subset of radiowaves and not a separate method.
Option D: Incorrect. Mobile and Wi-Fi are subsets of radiowaves, and Ethernet uses electricity, but these are not the three main methods of internet transmission.

Mnemonic: ELR: Electricity, Light, Radiowaves

1533. What is at the top of the DNS Hierarchy?

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

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Very Easy

Concept notes: The DNS hierarchy is structured in a tree-like format, with the root at the top.

Common Mistakes: Students may confuse the root with the top-level domain, which is the next level down in the hierarchy.

Explanations: The root is the highest level in the DNS hierarchy. It is represented by a single dot (.) and serves as the starting point for all domain name resolution. The root domain is managed by the Internet Corporation for Assigned Names and Numbers (ICANN) and is the foundation upon which all other domain levels are built.

Option Analysis:

Option A: Correct. The root is the topmost level in the DNS hierarchy.
Option B: Incorrect. The top-level domain (TLD) is the next level down from the root, such as .com, .org, etc.
Option C: Incorrect. The second-level domain is below the TLD, such as example.com.
Option D: Incorrect. Subdomains are further subdivisions of second-level domains, such as www.example.com.

Mnemonic: Remember: "R" for Root is the "R"oot of all domains.

1534. Which of the following is an advantage of star topology over other network topologies?

Correct Answer: Correct answer is: (C) Better security.

Exam Relevance: CCNA, CISSP, Network+

Difficulty: Moderate

Concept notes: In a star topology, all devices are connected to a central hub or switch. This centralization can enhance security because it allows for easier monitoring and control of network traffic.

Common Mistakes: Students may mistakenly believe that star topology offers better security because it reduces the distance data packets travel, which is not accurate.

Explanations: In a star topology, all devices are connected to a central hub or switch. This centralization allows for better monitoring and control of network traffic, which can enhance security. The central hub can implement security measures such as firewalls and intrusion detection systems, making it easier to manage and secure the network.

Option Analysis:

Option A: This is incorrect because in a star topology, each device is connected to the central hub, not to two other devices.
Option B: This is incorrect because the distance data packets travel is not necessarily reduced in a star topology compared to other topologies.
Option C: This is correct because the centralization in a star topology allows for better monitoring and control of network traffic, enhancing security.
Option D: This is incorrect because the ability to send multiple data packets at once is not a unique advantage of star topology.

Mnemonic: STAR = Security Through Aggregation and Regulation

1535. A(n) ..... is a box consisting of a radio receiver/transmitter and antennas that links to a wired network, router, or hub.

Correct Answer: Correct answer is: (C) Access point.

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

Difficulty: Moderate

Concept notes: An access point is a device that connects wireless devices to a wired network.

Common Mistakes: Students may confuse an access point with a hotspot, which is a location where wireless internet access is available.

Explanations: An access point is a box that includes a radio receiver/transmitter and antennas. It links to a wired network, router, or hub, enabling wireless devices to connect to the network. This makes it the correct answer as it fits the description provided in the question.

Option Analysis:

Option A: A hub is a device that connects multiple devices on a network but does not include a radio receiver/transmitter and antennas.
Option B: An RFID receiver is used for reading RFID tags and does not function as a network connection device.
Option C: An access point is the correct answer as it fits the description of a device that connects wireless devices to a wired network.
Option D: A hotspot is a location where wireless internet access is available, not a device that connects to a wired network.

Mnemonic: AP for Access Point, think "Access Point provides wireless access."

1536. Which email protocol allows an email client to download email messages to the local computer?

Correct Answer: Correct answer is: (D) POP3.

Exam Relevance: CISSP, CompTIA Network+, CCNA

Difficulty: Easy

Concept notes: POP3 (Post Office Protocol version 3) is a standard mail protocol used to retrieve emails from a mail server to a local device.

Common Mistakes: Students may confuse POP3 with IMAP4, which also retrieves emails but keeps a copy on the server.

Explanations: POP3 allows an email client to download email messages to the local computer. Once downloaded, the messages are typically removed from the server, unless the client is configured to leave them on the server. This protocol is designed for users who want to access their emails primarily from a single device.

Option Analysis:

Option A: IMAP4 is used for synchronizing email messages across multiple devices and does not download messages to the local computer.
Option B: SMTP is used for sending email messages and does not handle downloading messages to a local device.
Option C: TCP is a transport layer protocol and is not an email protocol.
Option D: POP3 is the correct protocol for downloading email messages to a local computer.

1537. Q9: What problem can occur through using cloud computing? (3-6)

Correct Answer: Correct answer is: (A) There can be privacy and security issues.

Exam Relevance: AP Computer Science Principles, A Level Computing, GCSE Computer Science

Difficulty: Moderate

Concept notes: Cloud computing involves storing and processing data on remote servers accessible over the internet. This can introduce privacy and security risks due to data being managed by third parties.

Common Mistakes: Students may overlook the potential security risks associated with cloud computing, focusing instead on the benefits like scalability and cost-effectiveness.

Explanations: Cloud computing involves storing and processing data on remote servers managed by third-party providers. This can lead to privacy and security issues because the data is not under the direct control of the user or the company. Risks include unauthorized access, data breaches, and compliance issues with data protection regulations. Therefore, privacy and security concerns are a significant problem in cloud computing.

Option Analysis:

Option A: This is the correct answer as cloud computing can lead to privacy and security issues due to data being managed by third parties.
Option B: This is incorrect because cloud computing does not require additional hardware to be added to a company's network to store data; it uses remote servers.
Option C: This is incorrect because cloud computing allows for storing large amounts of data, not just a small amount.
Option D: This is incorrect because cloud computing can store a wide variety of software, not just a small amount.

Mnemonic: Cloudy skies, not sunny days (C-S)

1538. Data in Computer Networks is sent in the form of

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

Exam Relevance: Computer Networks, Data Communications, Network Security

Difficulty: Easy

Concept notes: Data in computer networks is transmitted in discrete units called packets.

Common Mistakes: Students may confuse packets with other forms of data grouping, such as frames or segments.

Explanations: In computer networks, data is divided into smaller units called packets for efficient transmission. Each packet contains a portion of the data along with control information such as source and destination addresses. This method ensures reliable and efficient data transfer across the network.

Option Analysis:

Option A: Boxes is not a technical term used in data transmission.
Option B: Baskets is not a technical term used in data transmission.
Option C: Groups is a vague term and not specific to data transmission in networks.
Option D: Packets is the correct term used to describe the units of data transmitted in computer networks.

Mnemonic: Packets: P for Pieces of data.

1539. When we look at the basic components of a network, we can see that the computer can have a lot of different servers. Choose the option that is INCORRECT.

Correct Answer: Correct answer is: (A) Cloud server.

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

Difficulty: Easy

Concept notes: The question tests the understanding of different types of servers in a network. A cloud server is not a specific type of server but rather a service that provides computing resources over the internet. The other options (file server, email server, web server) are specific types of servers that perform particular functions within a network.

Common Mistakes: Students may confuse cloud server with a specific type of server like a file server or web server, not realizing that cloud server is a broader term for services provided over the internet.

Explanations: Cloud server is not a specific type of server but a service that provides computing resources over the internet. In contrast, file servers, email servers, and web servers are specific types of servers that perform particular functions within a network. Therefore, the incorrect option is the cloud server.

Option Analysis:

Option A: Cloud server is not a specific type of server but a service that provides computing resources over the internet.
Option B: File server is a specific type of server that stores and manages files for a network.
Option C: Email server is a specific type of server that handles the sending and receiving of email messages.
Option D: Web server is a specific type of server that hosts websites and serves web pages to users.

1540. Every computer on the Internet has a unique numeric address called a(n) .....

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

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

Difficulty: Easy

Concept notes: Every computer on the Internet has a unique numeric address called an IP address.

Common Mistakes: Students may confuse IP address with domain names, which are human-readable names that map to IP addresses.

Explanations: An IP address is a unique identifier for a device on a network. It is a numeric label that allows devices to communicate over the Internet. Domain addresses, protocol addresses, and web addresses are not unique numeric identifiers for devices on the Internet.

Option Analysis:

Option A: Domain address is a human-readable name that maps to an IP address, not a unique numeric identifier.
Option B: Protocol address is not a standard term used to describe a unique numeric identifier for a device on the Internet.
Option C: IP address is the correct term for a unique numeric identifier for a device on the Internet.
Option D: Web address typically refers to a URL, which includes a domain name and can be mapped to an IP address, but is not a unique numeric identifier itself.

Mnemonic: IP stands for Internet Protocol, which helps remember it's the unique numeric address for Internet communication.

⬅ Previous SetSet 154Next Set ➡

Computer networking MCQ - Set 154

Leave a Reply