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
Which of the following is a type of IoT network architecture where devices are connected to each other in a hierarchical fashion?
C
Correct answer
Explanation
A tree network is a type of IoT network architecture where devices are connected to each other in a hierarchical fashion. This architecture is commonly used in applications where devices are located at different levels and there is a need for efficient routing of data.
What is the purpose of a default gateway?
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To connect two networks together
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To provide Internet access to a network
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To route traffic between different subnets
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All of the above
D
Correct answer
Explanation
A default gateway is a device that connects two networks together. It provides Internet access to a network by routing traffic between the network and the Internet. It also routes traffic between different subnets.
What is the difference between a router and a switch?
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A router connects two networks together, while a switch connects devices on the same network
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A router routes traffic between different subnets, while a switch forwards traffic between devices on the same subnet
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A router uses IP addresses to route traffic, while a switch uses MAC addresses to forward traffic
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All of the above
D
Correct answer
Explanation
A router connects two networks together, while a switch connects devices on the same network. A router routes traffic between different subnets, while a switch forwards traffic between devices on the same subnet. A router uses IP addresses to route traffic, while a switch uses MAC addresses to forward traffic.
What is the purpose of a load balancer?
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To distribute traffic across multiple servers
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To provide Internet access to a network
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To route traffic between different subnets
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To connect two networks together
A
Correct answer
Explanation
A load balancer is a device that distributes traffic across multiple servers. It provides Internet access to a network by allowing multiple servers to share the load of incoming traffic.
What is the purpose of a CDN?
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To reduce latency
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To improve performance
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To reduce bandwidth usage
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All of the above
D
Correct answer
Explanation
A CDN (Content Delivery Network) is used to reduce latency, improve performance, and reduce bandwidth usage by caching content on multiple servers located in different geographic locations.
Which network type is characterized by a single, central connection point?
A
Correct answer
Explanation
In a star network, all devices are connected to a central hub or switch, which serves as the central connection point for data transmission.
Which network topology connects each device to every other device on the network?
D
Correct answer
Explanation
In a mesh topology, each device is connected to every other device on the network, creating multiple paths for data transmission and providing redundancy.
What is the primary function of a network switch?
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To connect devices to the network
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To forward data packets between networks
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To provide security to network data
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To store network data
A
Correct answer
Explanation
A network switch is a networking device that connects devices on a network, allowing them to communicate with each other and share resources.
What is the purpose of a gateway in a network?
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To connect devices to the network
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To forward data packets between networks
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To provide security to network data
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To store network data
B
Correct answer
Explanation
A gateway is a networking device that connects different networks, allowing data packets to be forwarded between them, enabling communication between devices on different networks.
Which of the following is NOT a common type of disaster recovery service?
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Data recovery
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Hardware replacement
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Software restoration
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Network reconfiguration
D
Correct answer
Explanation
Network reconfiguration is not a common type of disaster recovery service. It is a type of cybersecurity service.
What is the primary purpose of network redundancy?
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To increase network speed
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To reduce network latency
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To provide backup paths in case of failure
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To improve network security
C
Correct answer
Explanation
Network redundancy is designed to ensure that there are multiple paths available for data to travel between two points, so that if one path fails, the data can still be transmitted via an alternate path.
Which of the following is NOT a common type of network redundancy?
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Active-active redundancy
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Active-passive redundancy
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Load balancing
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Spanning Tree Protocol
D
Correct answer
Explanation
Spanning Tree Protocol is a network protocol that prevents loops in a network, not a type of network redundancy.
What is the term for a network topology that uses multiple paths between devices?
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Star topology
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Bus topology
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Ring topology
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Mesh topology
D
Correct answer
Explanation
A mesh topology is a network topology in which each device is connected to every other device, creating multiple paths for data to travel.
What is the purpose of load balancing in network redundancy?
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To increase network speed
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To reduce network latency
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To distribute traffic across multiple paths
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To improve network security
C
Correct answer
Explanation
Load balancing in network redundancy is used to distribute traffic across multiple paths, thereby improving network performance and reliability.
What is the term for a network device that is used to connect two or more networks?
A
Correct answer
Explanation
A router is a network device that is used to connect two or more networks and determine the best path for data to travel.