Cyber Security Jobs Network Security Fundamentals

Question 1

What does a firewall primarily do in a network security context?

Accepted Answer

Filters incoming and outgoing traffic based on defined rules

Answer

A firewall monitors and controls network traffic according to security rules to block unauthorized access.

Question 2

What is a DMZ in network architecture?

Accepted Answer

A subnetwork that exposes external-facing services while isolating the internal network

Answer

A DMZ (Demilitarized Zone) is a perimeter network that hosts public-facing services like web servers, separated from the internal network.

Question 3

Which protocol is used to securely transfer files over a network, replacing plain FTP?

Accepted Answer

SFTP

Answer

SFTP (SSH File Transfer Protocol) encrypts both commands and data, making it the secure replacement for legacy FTP.

Question 4

What is a VPN primarily used for in a corporate environment?

Accepted Answer

Encrypting remote connections to protect data in transit

Answer

A VPN (Virtual Private Network) creates an encrypted tunnel for remote users to securely access corporate resources.

Question 5

What does IDS stand for in network security?

Accepted Answer

Intrusion Detection System

Answer

An IDS (Intrusion Detection System) monitors network traffic and alerts administrators to suspicious or malicious activity.

Cyber Security Jobs Practice Test