GSM Quiz containing different channels.pptx

Quiz on GSM channels

1. Govt. of India Department of Telecommunications (DOT) Ministry of Communications, Global System for Mobile Communications B y- Atul Joshi Director (WA)

2. Q1: What does DCCH stand for in GSM? A. Direct 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 . B . Dedicated control Channel

3. Q2: Name the three types of Dedicated Control Channels in GSM. A . SDCCH, SACCH, FACCH 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). B. BCCH, CCCH, DCCH

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

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

6. Q5: How is the FACCH different from the SACCH? 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. A. FACCH steals TCH capacity; SACCH does not

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

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