OA Exams

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  • November 24, 2024

Question 01

It is a network of users that share computer resources in a limited area.

a) LAN
b) WAN
c) MAN
d) SAN

Correct Answer: a) LAN

Explanation: A LAN (Local Area Network) is a network in a limited geographical area.

Question 02

A set of rules established for users to exchange information.

a) Protocol
b) Topology
c) Network
d) Encryption

Correct Answer: a) Protocol

Explanation: A protocol defines rules for communication across a network.

Question 03

How are Local Area Networks (LANs) defined?

a) By speed and size
b) By protocol and topology
c) By hardware
d) By the number of users

Correct Answer: b) By protocol and topology

Explanation: LANs are typically defined by the protocols used and the topology that determines how devices are interconnected.

Question 04

The network architecture used to interconnect networking equipment.

a) Topology
b) Protocol
c) Bandwidth
d) Router

Correct Answer: a) Topology

Explanation: Topology refers to the physical or logical layout of a network.

Question 05

The most common topologies for LANs are?

a) Mesh, Star, Ring
b) Bus, Ring, Star
c) Tree, Mesh, Ring
d) Hub, Star, Bus

Correct Answer: b) Bus, Ring, Star

Explanation: The bus, ring, and star topologies are the most common network topologies.

Question 06

Which topology uses a token that circulates around the network?

a) Bus
b) Star
c) Token Ring
d) Mesh

Correct Answer: c) Token Ring

Explanation: Token Ring topology uses a token that passes through the network to control access.

Question 07

A network where each device ensures access for message transmission at regular intervals.

a) Bus
b) Token Ring
c) Star
d) Mesh

Correct Answer: b) Token Ring

Explanation: Token Ring is a deterministic network where devices get access in a fixed order.

Question 08

 What is the disadvantage of Token Ring topology?

a) Expensive to install
b) Difficult to troubleshoot
c) Token pattern errors can stop the network
d) Difficult to expand

Correct Answer: c) Token pattern errors can stop the network

Explanation: If a token pattern is corrupted, it may stop circulating and halt the network.

Question 09

What is the solution to Token Ring maintenance issues?

a) Replace all devices
b) Use a Token Ring hub
c) Switch to a bus topology
d) Use repeaters

Correct Answer: b) Use a Token Ring hub

Explanation: A Token Ring hub manages the token passing and improves network reliability.

Question 10

A coaxial cable that is looped through each networking device to transmit data in a bus topology is called?

a) Fiber optic
b) ThinNet
c) ThickNet
d) Token cable

Correct Answer: b) ThinNet

Explanation: ThinNet is a type of coaxial cable used in bus topology.

Question 11

 All devices on this topology can see each other’s data traffic.

a) Mesh
b) Star
c) Bus
d) Token Ring

Correct Answer: c) Bus

Explanation: In bus topology, data is broadcast to all devices connected on the same cable.

Question 12

In this topology, devices must wait for transmission pauses.

a) Bus
b) Star
c) Mesh
d) Token Ring

Correct Answer: a) Bus

Explanation: In a bus topology, only one device can transmit at a time, and others must wait.

Question 13

What is a disadvantage of the bus topology?

a) Expensive to maintain
b) Data corruption from simultaneous transmissions
c) Hard to install
d) Difficult to connect devices

Correct Answer: b) Data corruption from simultaneous transmissions

Explanation: If multiple devices transmit simultaneously, data collisions can occur.

Question 14

Which topology is rarely used in modern networks?

a) Star
b) Bus
c) Mesh
d) Token Ring

Correct Answer: b) Bus

Explanation: Bus topology is rarely used due to its inefficiency and difficulties with data transmission.

Question 15

What is the most common topology in today’s LANs?

a) Star
b) Bus
c) Mesh
d) Ring

Correct Answer: a) Star

Explanation: Star topology is widely used in modern LANs due to its scalability and ease of troubleshooting.

Question 16

In this topology, twisted-pair cables with modular plugs are used.

a) Star
b) Bus
c) Mesh
d) Ring

Correct Answer: a) Star

Explanation: Star topology uses twisted-pair cables for easy connection to a central switch or hub.

Question 17

 What facilitates data transfer between devices in a star topology?

a) Router
b) Hub or switch
c) Cable modem
d) Firewall

Correct Answer: b) Hub or switch

Explanation: In a star topology, hubs or switches manage data flow between devices.

Question 18

 A hub transmits data to:

a) One device
b) All connected devices
c) A switch
d) A router

Correct Answer: b) All connected devices

Explanation: A hub broadcasts data to all devices in the network.

Question 19

 A device that repeats signals in a network:

a) Hub
b) Switch
c) Repeater
d) Modem

Correct Answer: a) Hub

Explanation: Hubs act as multiport repeaters, forwarding data to all connected devices.

Question 20

What stores the physical address for each device in a star network?

a) Hub
b) Switch
c) Router
d) Server

Correct Answer: b) Switch

Explanation: A switch stores the MAC addresses of devices connected to its ports and directs traffic accordingly.

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