Competitive Exams : Computer Awareness - Networks (Set 1)

Question 1

Which layer of the OSI model is responsible for routing data packets from source to destination?

Accepted Answer

C) Network Layer

Answer

A) Data Link Layer

Answer

B) Transport Layer

Answer

D) Physical Layer

Question 2

A local area network (LAN) is typically used for connecting devices within a:

Accepted Answer

A) Small geographical area like an office building

Answer

B) Large region spanning cities or countries

Answer

C) Global network like the internet

Answer

D) Wireless-only network

Question 3

Which of the following devices operates at the Physical Layer of the OSI model and simply amplifies the signal to extend the length of a network segment?

Accepted Answer

D) Repeater

Answer

A) Router

Answer

B) Switch

Answer

C) Bridge

Question 4

What is the primary function of a DHCP server in a network?

Accepted Answer

B) To automatically assign IP addresses to network devices

Answer

A) To translate domain names to IP addresses

Answer

C) To filter network traffic based on security rules

Answer

D) To connect different network segments

Question 5

Which network topology connects all devices to a central hub or switch?

Accepted Answer

C) Star topology

Answer

A) Bus topology

Answer

B) Ring topology

Answer

D) Mesh topology

Question 6

What is the standard protocol used for sending email messages over the Internet?

Accepted Answer

D) SMTP

Answer

A) HTTP

Answer

B) FTP

Answer

C) POP3

Question 7

Which of the following is a connection-oriented protocol that provides reliable, ordered, and error-checked delivery of a stream of bytes between applications?

Accepted Answer

A) TCP

Answer

B) UDP

Answer

C) IP

Answer

D) ICMP

Question 8

What does DNS stand for in the context of computer networks?

Accepted Answer

B) Domain Name System

Answer

A) Data Network Service

Answer

C) Dynamic Network System

Answer

D) Digital Name Server

Question 9

A firewall primarily functions to:

Accepted Answer

D) Monitor and control incoming and outgoing network traffic

Answer

A) Amplify network signals

Answer

B) Assign IP addresses automatically

Answer

C) Translate domain names

Question 10

Which of the following devices is used to connect two different networks that may use different protocols?

Accepted Answer

C) Gateway

Answer

A) Switch

Answer

B) Repeater

Answer

D) Hub

Question 11

What is the commonly used term for the unique hardware address assigned to each network interface card (NIC)?

Accepted Answer

A) MAC address

Answer

B) IP address

Answer

C) Port address

Answer

D) DNS address

Question 12

In the TCP/IP model, which layer combines the functionalities of the Physical and Data Link layers of the OSI model?

Accepted Answer

B) Network Access Layer

Answer

A) Application Layer

Answer

C) Internet Layer

Answer

D) Transport Layer

Question 13

Which type of transmission allows data to flow in both directions, but only one direction at a time?

Accepted Answer

C) Half-duplex

Answer

A) Simplex

Answer

B) Full-duplex

Answer

D) Multi-plex

Question 14

What is the purpose of HTTP?

Accepted Answer

A) To transfer hypermedia documents on the World Wide Web

Answer

B) To secure remote access to a network

Answer

C) To transfer files between computers

Answer

D) To assign dynamic IP addresses

Question 15

Which device is used to connect multiple computers in a LAN and forward data only to the intended recipient based on MAC addresses?

Accepted Answer

D) Switch

Answer

A) Hub

Answer

B) Repeater

Answer

C) Router

Question 16

Which layer of the OSI model ensures that data is transmitted reliably and in the correct sequence?

Accepted Answer

B) Transport Layer

Answer

A) Session Layer

Answer

C) Presentation Layer

Answer

D) Application Layer

Question 17

What is the primary difference between IPv4 and IPv6?

Accepted Answer

A) IPv6 uses 128-bit addresses, while IPv4 uses 32-bit addresses.

Answer

B) IPv6 supports fewer addresses than IPv4.

Answer

C) IPv6 is a connection-oriented protocol, while IPv4 is connectionless.

Answer

D) IPv4 has better security features than IPv6.

Question 18

Which of the following is an example of a Wide Area Network (WAN)?

Accepted Answer

B) The Internet

Answer

A) A home Wi-Fi network

Answer

C) A network connecting computers in a single office floor

Answer

D) Bluetooth connection between two devices

Question 19

What is the term for the maximum amount of data that can be transmitted over a network connection in a given amount of time?

Accepted Answer

C) Bandwidth

Answer

A) Latency

Answer

B) Throughput

Answer

D) Jitter

Question 20

FTP is a protocol primarily used for:

Accepted Answer

A) Transferring files between a client and a server

Answer

B) Managing network devices remotely

Answer

C) Securing web browsing sessions

Answer

D) Resolving domain names to IP addresses