CompTIA ITF+ ITF Infrastructure 3 — Questions and Answers
Question 1: Which port number is used by HTTPS by default?
- 80
- 21
- 443 (Correct answer)
- 25
Correct answer: 443
HTTPS uses port 443 by default to provide encrypted web communication using TLS/SSL.
Question 2: What type of RAM is used in most modern desktop computers?
- SDRAM
- DDR4 SDRAM (Correct answer)
- RDRAM
- EDO RAM
Correct answer: DDR4 SDRAM
DDR4 SDRAM is the standard RAM type used in most modern desktop computers, offering improved speed and efficiency over previous generations.
Question 3: Which device connects a home network to an ISP and manages traffic between the two?
- Network switch
- Access point
- Router (Correct answer)
- Hub
Correct answer: Router
A router connects a local network to an external network (like the internet) and routes traffic between them using IP addresses.
Question 4: What does 'POST' stand for in the context of computer startup?
- Power On Self Test (Correct answer)
- Pre-Operating System Transfer
- Primary Output Signal Test
- Power Output System Test
Correct answer: Power On Self Test
POST stands for Power On Self Test, a diagnostic process the BIOS runs to verify hardware components are functioning before booting.
Question 5: A workstation has two monitors but only one video output port. What device can add additional display outputs?
- USB hub
- KVM switch
- Discrete GPU (graphics card) (Correct answer)
- Network adapter
Correct answer: Discrete GPU (graphics card)
Installing a discrete GPU (graphics card) adds multiple video output ports, allowing the connection of additional monitors.
Question 6: Which of the following best describes a VPN?
- A firewall that blocks external traffic
- An encrypted tunnel over a public network for secure remote access (Correct answer)
- A protocol that assigns IP addresses automatically
- A device that boosts Wi-Fi signal strength
Correct answer: An encrypted tunnel over a public network for secure remote access
A VPN (Virtual Private Network) creates an encrypted tunnel over the internet, allowing secure remote access to private network resources.
Question 7: Which RAID level provides disk mirroring with no striping, offering full redundancy?
- RAID 0
- RAID 1 (Correct answer)
- RAID 5
- RAID 10
Correct answer: RAID 1
RAID 1 mirrors data identically across two drives, providing full redundancy so if one drive fails, the other contains a complete copy.
CompTIA ITF+ ITF Infrastructure 3
Which port number is used by HTTPS by default?