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

What is the purpose of MAC addresses ? (Data Link Layer)

  1. Remote data delivery

  2. local data delivery

  3. load and remote data delivery

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

MAC addresses operate at the Data Link layer and are used for node-to-node communications within the same local network segment. IP addresses are used for remote, end-to-end routing across different networks.

Multiple choice

Typing the www.quiz2play.com failed to access. What is the problem? (Application Layer)

  1. Web sever

  2. DNS

  3. DHCP

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

When a domain name (like www.quiz2play.com) cannot be resolved to an IP address, the Domain Name System (DNS) is typically the service responsible for the failure.

Multiple choice

Data-Links layer that are described in the IEEE-802 LAN standards are

  1. MAC/LLC

  2. IPv4/IPv6

  3. TCP/UDP

  4. Linux/Windows
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The IEEE 802 standards define the Data Link layer by splitting it into two sublayers: the Logical Link Control (LLC) and the Media Access Control (MAC). Other options list protocols or operating systems, not sublayers.

Multiple choice

In the OSI Model, UDP protocol resides at which layer?

  1. Physical

  2. Datalink

  3. Network

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

UDP (User Datagram Protocol) is a connectionless protocol that operates at the Transport layer (Layer 4) of the OSI model, providing end-to-end communication services.

Multiple choice

What is the correct order of the 7 layers of the OSI Model?

  1. Appl, Presentation, Session, Trans, Net, Data Link, Physical

  2. Appl, Presentation, Session, Data link, Net, Trans, Physical

  3. Appl, Presentation, Session, Net, Data link, Trans, Physical

  4. Appl, Presentation, Session, Physical, Data link, Net, Trans
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The standard OSI model order from top to bottom is Application, Presentation, Session, Transport, Network, Data Link, and Physical. Option A correctly lists this sequence.