Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2481: Fill in the blank: Collisions in ALOHA occur because multiple stations share the same _______.
- A: router
- B: frame
- C: medium
- D: addressing scheme
View Answer
C
Q2482: Which of the following is a disadvantage of pure ALOHA?
- A: No need for delay
- B: Guaranteed transmission
- C: Collision risk
- D: Medium-specific usage
View Answer
C
Q2483: What is the main cause of data becoming garbled in ALOHA?
- A: Low bandwidth
- B: Delayed frames
- C: Collision due to simultaneous transmission
- D: Weak signal strength
View Answer
C
Q2484: Fill in the blank: In ALOHA, when a collision occurs, the station _______.
- A: reboots
- B: stops sending forever
- C: automatically retries after a delay
- D: deactivates its NIC
View Answer
C
Q2485: Which type of frame transmission is used in pure ALOHA?
- A: Fixed scheduling
- B: Continuous transmission
- C: Random frame transmission
- D: Slotted transmission
View Answer
C
Q2486: What happens if two ALOHA stations send frames that overlap in time?
- A: They are merged
- B: They are stored
- C: They collide
- D: They are acknowledged
View Answer
C
Q2487: Fill in the blank: The _______ method of access was the foundation of many modern random-access protocols.
- A: Polling
- B: ALOHA
- C: CSMA
- D: Token Ring
View Answer
B
Q2488: Which protocol laid the groundwork for wireless LAN communication?
- A: TDMA
- B: ALOHA
- C: PPP
- D: Frame Relay
View Answer
B
Q2489: Fill in the blank: In pure ALOHA, time is divided into _______.
- A: slots
- B: frames
- C: random intervals
- D: epochs
View Answer
C
Q2490: What is the first step a station takes in the ALOHA protocol?
- A: Wait for synchronization
- B: Transmit the data frame
- C: Listen for channel activity
- D: Check for collisions
View Answer
B