Networking and Security Fundamentals Flashcards

Which protocol uses port 443 and provides encrypted communication for web traffic?

Answer: HTTPS

HTTPS uses TLS/SSL encryption over port 443 to secure web communications.

What is the primary purpose of a VLAN in a network?

Answer: Segment network traffic logically without additional hardware

VLANs logically segment broadcast domains on a switch, improving security and traffic management.

An administrator needs to block external access to an internal web server except on port 80 and 443. Which device is BEST suited for this?

Answer: Firewall

A firewall filters traffic based on rules, allowing only specified ports while blocking others.

Which type of DNS record maps a hostname to an IPv4 address?

Answer: A

The DNS A record maps a fully qualified domain name to an IPv4 address.

What does the principle of least privilege mean in security?

Answer: Users are granted only the permissions needed to perform their job

Least privilege limits user access rights to only what is necessary, reducing the attack surface.

Which command displays the current TCP/IP configuration on a Windows system?

Answer: ipconfig

ipconfig displays IP address, subnet mask, and default gateway for all network adapters on Windows.

What is the function of NAT (Network Address Translation)?

Answer: Maps private IP addresses to a public IP for internet access

NAT allows multiple devices with private IP addresses to share a single public IP address for internet communication.