Free Bachelor of Science in Computer Science : Network Fundamentals Questions and Answers — Questions and Answers
Question 1: When is it necessary for a computer to possess an IP address?
- Playing media from the hard drive
- Connecting to a Wi-Fi hotspot (Correct answer)
- Both A &B
- None of the above
Correct answer: Connecting to a Wi-Fi hotspot
An IP (Internet Protocol) address is a unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. To connect to a Wi-Fi hotspot, which is part of a network, a computer needs an IP address to send and receive data packets. Playing media from a hard drive is a local operation and does not require network connectivity or an IP address.
Question 2: What is another term that can refer to a home computer network
- LAN (Correct answer)
- PAN
- Both A & B
- None of the above
Correct answer: LAN
A home computer network is commonly referred to as a Local Area Network (LAN). A LAN connects devices within a limited geographical area, such as a home, office building, or school. This allows devices like computers, printers, and smart devices to share resources and communicate with each other efficiently.
Question 3: What do peripherals primarily encompass?
- devices connected to a computer system to add functionality. (Correct answer)
- systems without compute systems that function alone.
- are used to transform computer systems.
- will work only without computer systems.
Correct answer: devices connected to a computer system to add functionality.
Peripherals are external devices that connect to a computer system to expand its capabilities or add specific functionalities. Examples include keyboards, mice, printers, scanners, and external hard drives. They are not essential for the core operation of the computer but enhance its utility and user interaction, making the system more versatile.
Question 4: What is the simplest device in a computer network that solely connects computers and lacks any additional functions?
- Router
- Switch
- Hub (Correct answer)
- Modem
Correct answer: Hub
A hub is the simplest device in a computer network used to connect multiple devices. It operates by broadcasting all incoming data packets to every connected port, without distinguishing between recipients. This makes it less efficient and less secure than a switch, which learns device addresses and forwards data only to the intended destination.
Question 5: Which of the following pairs share the most similarities?
- Router and Modem
- Switch & Modem
- Router and Hub
- Hub & Switch (Correct answer)
Correct answer: Hub & Switch
Hubs and switches share the most similarities as they both serve to connect multiple devices within a local area network (LAN). Both act as central connection points, allowing computers to communicate. However, a switch is a more intelligent version of a hub, as it can direct data to specific devices, whereas a hub simply broadcasts data to all connected devices.
Question 6: Which of the following is not among the components used for network connectivity?
- Mouse (Correct answer)
- Hub
- Cable
- Network Interface Card
Correct answer: Mouse
A mouse is an input device used to control a cursor on a computer screen and interact with graphical user interfaces. While essential for computer operation, it is not a component used for network connectivity. Hubs, cables, and Network Interface Cards (NICs) are all integral parts of establishing and maintaining a computer network connection.
Question 7: Networks facilitate the sharing of files among computers.
- TRUE (Correct answer)
- FALSE
- Maybe
- None of the above
Correct answer: TRUE
One of the primary benefits and functions of computer networks is to facilitate the sharing of resources, including files, among connected computers. Networks allow users to access, transfer, and collaborate on documents, images, and other data stored on different machines or central servers. This capability significantly enhances productivity and collaboration within an organization or home.
Question 8: What is required for a computer to establish a connection with a network or other computer devices?
- ethernet card
- NIC card (Correct answer)
- IP Address
- WiFi
Correct answer: NIC card
A Network Interface Card (NIC) is essential hardware that allows a computer to connect to a network. It translates data into a format that can be transmitted over the network medium, such as Ethernet cables or Wi-Fi signals. Without a NIC, a computer lacks the physical interface to send and receive data packets, making network communication impossible.
Question 9: What is the term for a computer network that links computers within a limited area such as an office building, school, or home?
- Local Area Network (Correct answer)
- Wide Area Network
- Wireless Local Area Network
- Metropolitan Area Network
Correct answer: Local Area Network
A Local Area Network (LAN) is a computer network that interconnects computers within a limited geographical area. This typically includes a home, school, office building, or a small group of adjacent buildings. LANs are characterized by their high data transfer rates and relatively small scale, distinguishing them from larger networks like Wide Area Networks (WANs).
Question 10: Which Command Prompt command is used to verify an internet connection?
- PING (Correct answer)
- iperf
- redgedit
- telnet
Correct answer: PING
The PING command is a fundamental network utility used to test the reachability of a host on an Internet Protocol (IP) network. It sends Internet Control Message Protocol (ICMP) echo request packets to the target host and listens for ICMP echo reply packets. A successful reply indicates that the network connection is active and the host is reachable, making it ideal for verifying internet connectivity.
Question 11: A network forms when a single device is linked to another.
- TRUE
- FALSE (Correct answer)
- Maybe
- None of the above
Correct answer: FALSE
A network, by definition, requires at least two or more devices to be linked together. The purpose of a network is to facilitate communication and resource sharing between multiple entities. A single device connected to nothing else cannot form a network, as there is no other point of connection for data exchange.
Question 12: What are the benefits of having a network?
- Expensive Hardware
- Specialist staff required
- Communication (Correct answer)
- Hacking
Correct answer: Communication
One of the primary benefits of a computer network is enhanced communication among users and devices. Networks allow for quick and efficient exchange of information, such as emails, instant messages, and shared documents. This facilitates collaboration, improves workflow, and enables users to access shared resources seamlessly.
Question 13: What are the drawbacks of networks?
- Share files
- Viruses (Correct answer)
- Share Internet
- Roaming
Correct answer: Viruses
A significant drawback of networks is the increased vulnerability to security threats, particularly viruses and malware. When computers are interconnected, a virus on one machine can quickly spread to others across the network. This necessitates robust security measures, including antivirus software and firewalls, to protect network integrity and data.
Question 14: What is the purpose of connecting computers into a network?
- So they can share files and resources. (Correct answer)
- To have sole use of a machine and avoid bandwidth limitations.
- Both A&B
- None of these
Correct answer: So they can share files and resources.
The fundamental purpose of connecting computers into a network is to enable the sharing of files, data, and hardware resources. This allows multiple users to access common documents, printers, scanners, and internet connections efficiently. Resource sharing optimizes costs and improves productivity by centralizing access to valuable assets.
Question 15: What does the term "Networking" refer to?
- Networking is consists of two or more computers. (Correct answer)
- Networking is a business that you need if you want to be rich.
- Networking is all about business.
- None of the above
Correct answer: Networking is consists of two or more computers.
In the context of computer science, "networking" refers to the practice of connecting two or more computing devices together. This connection allows them to exchange data, share resources, and communicate with each other. The core concept involves establishing links between multiple entities to form a cohesive system for information exchange.
Question 16: Which equipment is employed to link numerous devices within a network, facilitating communication among them by transmitting data exclusively to the designated recipient?
- Switch (Correct answer)
- Network Cable
- Network Interface Card
- Hub
Correct answer: Switch
A network switch is a device that connects multiple devices on a computer network and intelligently forwards data packets. Unlike a hub, which broadcasts data to all connected devices, a switch learns the MAC addresses of connected devices and sends data only to the specific destination port. This targeted transmission improves network efficiency and reduces unnecessary traffic.
Free Bachelor of Science in Computer Science : Network Fundamentals Questions and Answers
When is it necessary for a computer to possess an IP address?