NSCT -Data Communication MCQs 20 min Score: 0 Attempted: 0/20 Subscribe 1. What is Data Communication? (A) Processing data (B) Printing data (C) Storing data in memory (D) Exchange of data between devicesShow All Answers 2. Which of the following is a component of Data Communication? (A) Sender (B) All of these (C) Transmission Medium (D) Receiver 3. The physical path through which data travels is called: (A) Protocol (B) Transmission Medium (C) Network (D) Router 4. A set of rules that govern data communication is called: (A) Switch (B) Topology (C) Hub (D) Protocol 5. Which device connects different networks together? (A) Hub (B) Router (C) Switch (D) Repeater 6. Which topology uses a central hub or switch? (A) Bus (B) Star (C) Ring (D) Mesh 7. What does LAN stand for? (A) Long Area Network (B) Large Area Network (C) Logical Area Network (D) Local Area Network 8. Which type of signal is continuous? (A) Analog Signal (B) Digital Signal (C) Binary Signal (D) Discrete Signal 9. Which device converts digital signals to analog signals? (A) Modem (B) Router (C) Switch (D) Bridge 10. Data transmission speed is measured in: (A) Bytes (B) Hertz (C) Pixels (D) Bits per second 11. What does WAN stand for? (A) Web Area Network (B) Wireless Area Network (C) Wide Area Network (D) Work Area Network 12. Which topology forms a closed loop? (A) Bus (B) Ring (C) Star (D) Tree 13. Which device regenerates signals in a network? (A) Router (B) Repeater (C) Bridge (D) Gateway 14. The smallest unit of data is: (A) Byte (B) Bit (C) Kilobyte (D) Megabyte 15. Which communication mode allows transmission in both directions at the same time? (A) Simplex (B) Full Duplex (C) Half Duplex (D) One Way 16. The Internet is an example of: (A) LAN (B) MAN (C) PAN (D) WAN 17. Which topology uses a single backbone cable? (A) Mesh (B) Star (C) Ring (D) Bus 18. What does IP stand for? (A) Internet Protocol (B) Internal Protocol (C) Information Protocol (D) Internet Path 19. Which layer of the OSI model is responsible for data transmission over physical media? (A) Application Layer (B) Physical Layer (C) Transport Layer (D) Presentation Layer 20. Which device connects multiple computers in a LAN? (A) Hub (B) Printer (C) Scanner (D) Monitor
