CompTIA ITF+ ITF+ Networking Fundamentals 2 — Questions and Answers
Question 1: Which protocol automatically assigns IP addresses to devices when they join a network?
- DNS
- HTTP
- DHCP (Correct answer)
- FTP
Correct answer: DHCP
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet masks, gateways, and DNS servers to network devices.
Question 2: What does DNS primarily do on a network?
- Encrypts web traffic
- Translates domain names into IP addresses (Correct answer)
- Assigns IP addresses to devices
- Filters incoming network connections
Correct answer: Translates domain names into IP addresses
DNS (Domain Name System) translates human-readable domain names like www.example.com into numeric IP addresses computers use to communicate.
Question 3: Which of the following IP address ranges is reserved for private use and not routable on the public internet?
- 8.8.8.8/32
- 192.168.0.0/16 (Correct answer)
- 172.217.0.0/16
- 104.16.0.0/12
Correct answer: 192.168.0.0/16
The 192.168.0.0/16 range is one of three RFC 1918 private address ranges reserved for internal network use and blocked from internet routing.
Question 4: What is the purpose of a subnet mask?
- To encrypt communications between hosts
- To identify which portion of an IP address is the network vs. the host (Correct answer)
- To assign MAC addresses to devices
- To block unauthorized traffic at the perimeter
Correct answer: To identify which portion of an IP address is the network vs. the host
A subnet mask separates the network portion of an IP address from the host portion, enabling routers to determine if a destination is local or remote.
Question 5: Which protocol is used for secure, encrypted web browsing?
- HTTP
- FTP
- HTTPS (Correct answer)
- SMTP
Correct answer: HTTPS
HTTPS (Hypertext Transfer Protocol Secure) encrypts web traffic using TLS, protecting data in transit between the browser and the web server.
Question 6: Which port number does standard (unencrypted) HTTP traffic use by default?
- 21
- 25
- 80 (Correct answer)
- 443
Correct answer: 80
HTTP uses TCP port 80 by default for unencrypted web traffic, while HTTPS uses port 443.
Question 7: Which protocol is used to send outgoing email from a mail client to a mail server?
- POP3
- IMAP
- SMTP (Correct answer)
- HTTP
Correct answer: SMTP
SMTP (Simple Mail Transfer Protocol) is used to send and relay outgoing email messages between mail clients and servers.
CompTIA ITF+ ITF+ Networking Fundamentals 2
Which protocol automatically assigns IP addresses to devices when they join a network?