DCCH_Quiz_GSM_With_Explanations and answers.pptx

Quiz on DCCH channel

1. Quiz on Dedicated Control Channels (DCCH) in GSM With Answer Explanations

2. Q1: What does DCCH stand for in GSM? A. Direct Control Channel B. Dedicated Control Channel C. Duplex Control Channel D. Digital Control Channel Explanation: DCCH stands for Dedicated Control Channel, which is used for dedicated signaling between the mobile and the network.

3. Q2: Name the three types of Dedicated Control Channels in GSM. A. SDCCH, SACCH, FACCH B. BCCH, CCCH, DCCH C. RACH, PCH, AGCH D. TCH, SCH, FCCH Explanation: The three types of DCCH in GSM are SDCCH (Standalone), SACCH (Slow Associated), and FACCH (Fast Associated).

4. Q3: Which DCCH is used for signaling during call setup before a traffic channel is allocated? A. FACCH B. SACCH C. BCCH D. SDCCH Explanation: SDCCH is used before a traffic channel is allocated, such as during call setup or location update.

5. Q4: What is the function of the SACCH? A. Authentication B. Urgent handover C. Power control & timing advance D. SMS delivery Explanation: SACCH carries slow, periodic signaling like timing advance and power control during a call.

6. Q5: How is the FACCH different from the SACCH? A. FACCH steals TCH capacity; SACCH does not B. FACCH is for SMS C. SACCH is urgent D. FACCH works in idle mode Explanation: FACCH is used for urgent signaling and temporarily takes over a traffic channel, unlike SACCH which transmits in reserved slots.

7. Q6: Which DCCH delivers call setup info like authentication and location update? A. BCCH B. SDCCH C. SACCH D. FACCH Explanation: SDCCH handles signaling related to authentication, call setup, and location update.

8. Q7: During an ongoing call, which channel handles link maintenance information? A. BCCH B. SDCCH C. SACCH D. FACCH Explanation: SACCH is responsible for maintaining the radio link by providing timing and power control during an active call.

9. Q8: What happens when the network sends an urgent handover command during a call? A. Uses SACCH B. Uses FACCH C. Uses BCCH D. Uses SDCCH Explanation: FACCH is used to send urgent commands like handover by replacing voice data temporarily on a traffic channel.