Computer Knowledge

Computer Networks

2,461 Questions

Computer networks involve the architecture, protocols, and security measures used for digital communication. This collection covers OSI model layers, IP addressing, data transmission, and cryptographic standards. These concepts are vital for the computer knowledge sections of banking and government exams.

OSI model layersNetwork protocolsIP subnet maskingData encryption standardsServer configurationsNetwork commands

Computer Networks Questions

Multiple choice

Bits are packages into frames on the network layer

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bits are packaged into frames at the Data Link layer, not the Network layer. The Network layer handles packets, while the Data Link layer is responsible for framing.

Multiple choice

What Hardware is part of the Network layer

  1. The Firewall

  2. The Router

  3. The Packet
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A router is the primary hardware device that operates at the Network layer (Layer 3) of the OSI model. Firewalls can operate at various layers, and a packet is a data unit, not hardware.

Multiple choice

What does the Network layer do?

  1. Network stuff

  2. Routes packets

  3. Transports info
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Network layer is responsible for logical addressing and routing packets across different networks. Transporting information is the primary role of the Transport layer.

Multiple choice

What is OSI layer 3?

  1. The Application layer

  2. The Network layer

  3. The Transport layer

  4. The Session layer
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In the OSI model, Layer 1 is Physical, Layer 2 is Data Link, and Layer 3 is the Network layer. The Application layer is Layer 7, and the Session layer is Layer 5.

Multiple choice

User Supports Layers are:

  1. Physical, Datalink, Network

  2. Session, Presentation, Application
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The OSI model is divided into two groups: the Media layers (Physical, Data Link, Network) and the Host or User Support layers (Session, Presentation, Application). The latter group handles user-facing data and application interactions.

Multiple choice

Which addresses are known as link addresses?

  1. Physical Address

  2. Logical Address

  3. Port Address

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

Physical addresses are often referred to as link-layer addresses or hardware addresses because they are used to identify devices on the local network link.

Multiple choice

What is an application that UDP is used instead of TCP?

  1. Online Gaming

  2. Email

  3. File Tranfer

  4. Web Browsing

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

UDP is preferred for online gaming because it prioritizes speed and low latency over reliability; lost packets are generally ignored rather than retransmitted, which would cause lag.