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Network Devices Overview

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Questions and Answers

What does data communication refer to?

Connecting people with people, ideas, and opportunities

Communication at a distance

Sending messages using telephony, telegraphy, and television

Transmitting and receiving data between devices over a communication channel (correct)

How many components are there in a Data Communications system?

Four

Six

Five (correct)

Seven

What does the term 'telecommunication' mean?

Connecting people with opportunities

Far distance communication

Communication involving telephony, telegraphy, and television (correct)

Transmitting data between devices

What is the main goal of networking?

Connecting people with ideas Signup and view all the answers

What is the function of a router in a network?

Allow multiple computers to connect to the network Signup and view all the answers

Which device connects to an internet service provider (ISP) to provide internet access to a network?

Modem Signup and view all the answers

What is the primary function of a modem in a network setup?

Translate digital signals to analog and vice versa Signup and view all the answers

How do protocols contribute to data communications?

Represent an agreement governing data exchange between devices Signup and view all the answers

What is the function of a repeater in a network?

Regenerate the signal over the network to prevent weakening or corruption Signup and view all the answers

What distinguishes a hub from a repeater in a network?

A hub is a multi-port repeater Signup and view all the answers

Which networking device allows Wi-Fi devices to connect to a wired network?

Wireless access point (WAP) Signup and view all the answers

What is the main purpose of a network interface card (NIC)?

Connect the computer to the network Signup and view all the answers

What is the purpose of Address Resolution Protocol (ARP)?

To discover physical addresses and associate them with IP addresses Signup and view all the answers

What is the function of a MAC address?

To uniquely identify a network interface controller Signup and view all the answers

Why is Port Address Translation (PAT) considered the most common way of transferring data?

Each device adds its own port number for data transfer Signup and view all the answers

What is the role of a port number in networking?

To uniquely identify a connection endpoint Signup and view all the answers