SAC Networking and Security Fundamentals 2 — Questions and Answers
Question 1: Which protocol uses port 443 and provides encrypted communication for web traffic?
- HTTP
- FTP
- HTTPS (Correct answer)
- Telnet
Correct answer: HTTPS
HTTPS uses TLS/SSL encryption over port 443 to secure web communications.
Question 2: What is the primary purpose of a VLAN in a network?
- Increase physical cable speed
- Segment network traffic logically without additional hardware (Correct answer)
- Replace the need for a router
- Encrypt all network traffic
Correct answer: Segment network traffic logically without additional hardware
VLANs logically segment broadcast domains on a switch, improving security and traffic management.
Question 3: 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?
- Hub
- Repeater
- Firewall (Correct answer)
- Patch panel
Correct answer: Firewall
A firewall filters traffic based on rules, allowing only specified ports while blocking others.
Question 4: Which type of DNS record maps a hostname to an IPv4 address?
- MX
- CNAME
- A (Correct answer)
- PTR
Correct answer: A
The DNS A record maps a fully qualified domain name to an IPv4 address.
Question 5: What does the principle of least privilege mean in security?
- Users receive maximum permissions to avoid helpdesk calls
- Users are granted only the permissions needed to perform their job (Correct answer)
- Administrators share a single privileged account
- All systems use the same default password
Correct 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.
Question 6: Which command displays the current TCP/IP configuration on a Windows system?
- netstat
- ping
- ipconfig (Correct answer)
- tracert
Correct answer: ipconfig
ipconfig displays IP address, subnet mask, and default gateway for all network adapters on Windows.
Question 7: What is the function of NAT (Network Address Translation)?
- Converts hostnames to IP addresses
- Maps private IP addresses to a public IP for internet access (Correct answer)
- Encrypts data packets in transit
- Assigns IP addresses via DHCP
Correct 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.
SAC Networking and Security Fundamentals 2
Which protocol uses port 443 and provides encrypted communication for web traffic?