Computer Knowledge

Computer Networks

2,095 Questions

Computer networks form the backbone of digital communication, connecting multiple devices to share data and resources. This area covers network architectures, transmission media, modems, and topologies like LAN. These concepts are crucial for computer knowledge sections in banking and government exams.

Network topologiesModulation and demodulationNetwork addressingFiber optic cablesWireless infrastructure

Computer Networks Questions

Multiple choice

What is the purpose of a subnet mask?

  1. To divide a network into smaller subnetworks

  2. To determine the network address of a host

  3. To determine the broadcast address of a network

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A subnet mask serves multiple purposes. It is used to divide a network into smaller subnetworks, allowing for more efficient routing and addressing. It also helps determine the network address of a host, which is the first address in the subnet, and the broadcast address, which is the last address in the subnet.

Multiple choice

What is the maximum number of subnetworks that can be created from a network with a subnet mask of 255.255.255.192?

  1. 2

  2. 4

  3. 8

  4. 16
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The number of subnetworks that can be created from a network is determined by the number of bits in the host portion of the subnet mask. In this case, the host portion is 8 bits (32 - 24 = 8), so the maximum number of subnetworks is 2^8 = 256. However, since the network address and broadcast address also occupy two addresses, the actual number of usable subnetworks is 256 - 2 = 254.

Multiple choice

What is the purpose of a default gateway?

  1. To connect two networks together

  2. To provide access to the Internet

  3. To route traffic between networks

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A default gateway serves multiple purposes. It connects two networks together, allowing devices on one network to communicate with devices on the other network. It also provides access to the Internet by routing traffic from the local network to the Internet. Additionally, it routes traffic between networks, ensuring that data packets reach their intended destinations.

Multiple choice

What is the maximum transmission unit (MTU) for Ethernet networks?

  1. 512 bytes

  2. 1024 bytes

  3. 1500 bytes

  4. 2048 bytes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The maximum transmission unit (MTU) for Ethernet networks is typically 1500 bytes. This means that the maximum size of a single data frame that can be transmitted over an Ethernet network is 1500 bytes, including the Ethernet header and trailer.

Multiple choice

What is a static route?

  1. A route that is manually configured

  2. A route that is automatically learned

  3. A route that is based on a policy

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A static route is a route that is manually configured by the user. Static routes are typically used for routes that are not likely to change frequently.

Multiple choice

Which of the following is a key trend in networking?

  1. Software-Defined Networking (SDN)

  2. Network Function Virtualization (NFV)

  3. Intent-Based Networking (IBN)

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

SDN, NFV, and IBN are all key trends in networking that are driving innovation and transformation.

Multiple choice

What is the key concept behind Intent-Based Networking (IBN)?

  1. Automating network configuration and management

  2. Translating business intent into network policies

  3. Providing real-time network visibility and control

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

IBN focuses on translating business intent into network policies, enabling networks to adapt and respond to changing business needs.

Multiple choice

Which technology enables the creation of virtual networks over a shared physical infrastructure?

  1. Software-Defined Wide Area Network (SD-WAN)

  2. Network Virtualization (NV)

  3. Virtual Private Network (VPN)

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Network Virtualization (NV) allows multiple virtual networks to be created over a shared physical infrastructure.

Multiple choice

Which technology enables devices to communicate with each other without a central access point?

  1. Mesh Networking

  2. Ad hoc Networking

  3. Peer-to-Peer Networking

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mesh Networking, Ad hoc Networking, and Peer-to-Peer Networking all allow devices to communicate without a central access point.

Multiple choice

Which technology enables the use of multiple paths for data transmission?

  1. Multipathing

  2. Load Balancing

  3. Traffic Engineering

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Multipathing, Load Balancing, and Traffic Engineering all allow for the use of multiple paths for data transmission.

Multiple choice

Which of the following is NOT a type of computer network?

  1. Local Area Network (LAN)

  2. Wide Area Network (WAN)

  3. Metropolitan Area Network (MAN)

  4. Internet
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Internet is not a type of computer network, but rather a global system of interconnected computer networks.

Multiple choice

Which of the following is a key feature of the Modbus protocol?

  1. It is a simple and easy-to-use protocol

  2. It supports both synchronous and asynchronous communication

  3. It is a secure protocol

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Modbus protocol is a simple and easy-to-use protocol, which makes it popular in industrial automation and control systems.

Multiple choice

Which of the following is an example of a layer 2 solution?

  1. Lightning Network

  2. Plasma

  3. Raiden Network

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lightning Network, Plasma, and Raiden Network are all examples of layer 2 solutions that have been developed to address the scalability challenges of blockchain networks. These solutions operate on top of the main blockchain network, enabling faster and more efficient processing of transactions.

Multiple choice

What is the typical bandwidth requirement for cloud gaming?

  1. 5 Mbps

  2. 10 Mbps

  3. 15 Mbps

  4. 20 Mbps
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The typical bandwidth requirement for cloud gaming is 15 Mbps.

Multiple choice

Which technology enables wireless communication over short distances?

  1. Bluetooth

  2. Wi-Fi

  3. Cellular

  4. Satellite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bluetooth is a wireless technology that allows devices to communicate over short distances without the need for cables or wires.