Computer Networks & Security Quiz

Which OSI layer is responsible for logical addressing (IP)?

• Data Link

• Network

• Transport

• Application

A switch works mainly at which OSI layer?

• Layer 1

• Layer 2

• Layer 3

• Layer 7

Which device separates networks and controls traffic based on rules?

• Switch

• Firewall

• Hub

• Repeater

Which of these is an example of a network segmentation technique?

• VLANs

• Using USBs

• Printing documents

• Disabling Wi-Fi

The main purpose of AAA in security is:

• Authentication, Authorization, Accounting

• Availability, Access, Application

• Admin, Audit, Access

• Advanced Automatic Analysis

Encryption provides which of the following?

• Confidentiality

• Printing speed

• Internet access

• Hardware security only

Which protocol is secure for remote login?

• Telnet

• FTP

• SSH

• HTTP

A “stateful firewall” means:

• It can remember active sessions and connections

• It only filters based on static rules

• It never logs activity

• It blocks all traffic

A virus differs from a worm because:

• A virus spreads without human action

• A worm needs a host file

• A virus needs a host file while a worm spreads standalone

• Both are exactly the same

A Trojan horse usually:

• Disguises as legitimate software but hides malicious code

• Only infects USB drives

• Self-replicates

• Encrypts files automatically