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

Which type of communication system is used for long-distance communication between railroad control centers and remote locations?

  1. Cellular networks

  2. Radio frequency (RF) communication

  3. Satellite communication

  4. Fiber optic communication
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fiber optic communication is often used for long-distance communication in railroad systems due to its high bandwidth, low latency, and resistance to electromagnetic interference.

Multiple choice

Which network topology is characterized by a central node connected to all other nodes?

  1. Bus Topology

  2. Star Topology

  3. Ring Topology

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

In a star topology, a central node, typically a switch or router, is connected to all other nodes in the network.

Multiple choice

In a bus topology, what type of transmission medium is typically used?

  1. Coaxial Cable

  2. Twisted Pair Cable

  3. Fiber Optic Cable

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

Bus topologies often utilize coaxial cable as the transmission medium due to its ability to carry signals over long distances.

Multiple choice

Which network topology is commonly used in Wide Area Networks (WANs)?

  1. Bus Topology

  2. Star Topology

  3. Ring Topology

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

Mesh topologies are frequently employed in WANs because they provide multiple paths for data transmission, enhancing reliability and redundancy.

Multiple choice

In a ring topology, what happens when a node fails?

  1. The entire network fails

  2. Data is rerouted through other nodes

  3. The failed node is isolated

  4. The network performance is unaffected
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In a ring topology, data is passed from node to node in a circular fashion. If a node fails, data is rerouted through other nodes to maintain connectivity.

Multiple choice

Which network topology is most susceptible to single-point failures?

  1. Bus Topology

  2. Star Topology

  3. Ring Topology

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

In a star topology, the failure of the central node can disrupt the entire network, making it susceptible to single-point failures.

Multiple choice

Which network topology is commonly used in home and small office networks?

  1. Bus Topology

  2. Star Topology

  3. Ring Topology

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

Star topologies are widely used in home and small office networks due to their simplicity, ease of installation, and scalability.

Multiple choice

In a bus topology, what happens when a node transmits data?

  1. All other nodes receive the data

  2. Only the intended recipient receives the data

  3. The data is broadcast to all nodes

  4. The data is sent to the central node
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In a bus topology, when a node transmits data, the data is broadcast to all other nodes on the network.

Multiple choice

Which network topology is characterized by a series of interconnected nodes forming a closed loop?

  1. Bus Topology

  2. Star Topology

  3. Ring Topology

  4. Mesh Topology
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In a ring topology, nodes are connected in a circular fashion, forming a closed loop.

Multiple choice

What is the primary disadvantage of a bus topology?

  1. High cost

  2. Difficult to manage

  3. Susceptible to single-point failures

  4. Low bandwidth
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bus topologies are susceptible to single-point failures because if the central cable fails, the entire network is disrupted.

Multiple choice

In a star topology, what is the role of the central node?

  1. To amplify signals

  2. To route data

  3. To provide power to nodes

  4. To store data
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In a star topology, the central node, typically a switch or router, is responsible for routing data between nodes.

Multiple choice

Which network topology is commonly used in large enterprise networks?

  1. Bus Topology

  2. Star Topology

  3. Ring Topology

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

Mesh topologies are often used in large enterprise networks due to their high fault tolerance and ability to provide multiple paths for data transmission.

Multiple choice

Which network topology is characterized by a fully connected network, where each node is directly connected to every other node?

  1. Bus Topology

  2. Star Topology

  3. Ring Topology

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

In a mesh topology, each node is directly connected to every other node, providing multiple paths for data transmission.

Multiple choice

Which of these is NOT a common type of mobile device network?

  1. Wi-Fi

  2. Cellular

  3. Bluetooth

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

NFC is not as common a type of mobile device network as Wi-Fi, Cellular, and Bluetooth.

Multiple choice

Which of the following is a type of network?

  1. Social network

  2. Economic network

  3. Political network

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

A network is a set of interconnected nodes. Social networks, economic networks, and political networks are all types of networks.