Digital Systems

What is the main difference between a Local Area Network (LAN) and a Wide Area Network (WAN)?

• LAN covers a large geographical area, while WAN is limited to a single building

• LAN is a private network within a small area, while WAN connects multiple LANs over large distances

• WAN is faster than LAN

• WAN does not require any networking hardware

Which of the following is NOT a type of wireless data transmission?

• Radio

• Ethernet

• Satellite

• Microwave

What is the primary purpose of cloud computing?

• To allow users to access storage and computing resources without physical infrastructure

• To provide internet services

• To improve WiFi speed

• To create a secure local network

What is a computer virus?

• A security tool used to remove malware

• A networking device used for secure connections

• A type of malware that spreads between computers, causing damage to data and software

• A hardware failure that slows down a computer

How does a Trojan Horse virus operate?

• It self-replicates and spreads to other computers automatically

• It encrypts user data to prevent unauthorized access

• It blocks access to specific websites

• It disguises itself as a legitimate program and tricks users into installing it

What is phishing?

• A security protocol used in encryption

• A method of securely transferring data

• A type of networking hardware

• A cyberattack that attempts to steal personal information by tricking users into revealing details

What is the purpose of encryption in network security?

• To speed up internet connections

• To prevent malware from spreading

• To scramble data so it cannot be read if intercepted

• To allow all network devices to communicate freely

What is the function of a firewall?

• It encrypts all data sent over a network

• It prevents overheating of network hardware

• It monitors and controls network traffic, blocking unrecognized IP addresses

• It physically blocks internet cables from being cut

What is a WEP key used for?

• To secure data transfer over a wireless network through encryption

• To physically lock a computer

• To increase the internet speed

• To allow devices to connect to a network without security checks

What is the role of a server in a network?

• It provides large storage space and manages network operations

• It connects home networks to the internet

• It acts as a firewall to protect against malware

• It allows only wired devices to connect