ICT Fundamentals 5 — Questions and Answers
Question 1: What is the difference between a LAN and a WAN?
- LAN uses wireless; WAN uses cables
- LAN covers a small area; WAN covers a large geographic area (Correct answer)
- LAN is faster than WAN in all cases
- LAN requires internet access; WAN does not
Correct answer: LAN covers a small area; WAN covers a large geographic area
A LAN (Local Area Network) covers a small area like a home or office, while a WAN (Wide Area Network) spans large geographic areas.
Question 2: Which of the following is an example of biometric authentication?
- Entering a PIN number
- Using a smart card
- Scanning a fingerprint (Correct answer)
- Typing a password
Correct answer: Scanning a fingerprint
Fingerprint scanning is biometric authentication because it uses unique physical characteristics of the user to verify identity.
Question 3: What is the purpose of data encryption?
- To compress files and save storage space
- To convert data into an unreadable format to protect it (Correct answer)
- To speed up data transmission
- To duplicate data for backup purposes
Correct answer: To convert data into an unreadable format to protect it
Data encryption converts information into an unreadable format using algorithms, so only authorized parties with a decryption key can access it.
Question 4: What does 'bandwidth' refer to in networking?
- The physical width of a network cable
- The number of devices on a network
- The maximum data transfer rate of a network connection (Correct answer)
- The distance a signal can travel
Correct answer: The maximum data transfer rate of a network connection
Bandwidth refers to the maximum rate at which data can be transferred over a network connection, typically measured in Mbps or Gbps.
Question 5: Which programming concept allows a function to call itself?
- Iteration
- Recursion (Correct answer)
- Polymorphism
- Encapsulation
Correct answer: Recursion
Recursion is a programming technique where a function calls itself to solve smaller instances of the same problem.
Question 6: What is a firewall's primary purpose in network security?
- Increase internet speed
- Store backup copies of data
- Monitor and control incoming and outgoing network traffic (Correct answer)
- Assign IP addresses to devices
Correct answer: Monitor and control incoming and outgoing network traffic
A firewall monitors and controls network traffic based on security rules to protect a network from unauthorized access.
Question 7: Which of the following best describes 'open source' licensing?
- Software that is free but cannot be modified
- Software whose source code is publicly available for use and modification (Correct answer)
- Software only available to government organizations
- Software that requires a monthly subscription
Correct answer: Software whose source code is publicly available for use and modification
Open source licensing allows the source code to be publicly viewed, modified, and distributed under specific license terms.
ICT Fundamentals 5
What is the difference between a LAN and a WAN?