MCQOPTIONS
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MCQOPTIONS
This section includes 38 Mcqs, each offering curated multiple-choice questions to sharpen your Telecom knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Choose a correct flow of SMS from one system to the other in a GSM network. |
| A. | SC to SMS-GMSC |
| B. | SMS-GMSC to MSC |
| C. | MSC to MS ( via BSC and BTS) |
| D. | ALL |
| Answer» E. | |
| 2. |
To deliver an SMS to a Mobile Station, VLR enquiry is done via which system in a GSM Network? |
| A. | SC (SMS Center) |
| B. | SMS-GMSC |
| C. | MSC |
| D. | HLR |
| Answer» D. HLR | |
| 3. |
To deliver an SMS to a Mobile Station, HLR enquiry is done through which system in GSM network? |
| A. | SMS-GMSC |
| B. | SC (SMS Center) |
| C. | MSC |
| D. | VLR |
| Answer» B. SC (SMS Center) | |
| 4. |
All SMS are stored in which system in a GSM Architecture before forwarding to the recipient? |
| A. | SC (SMS Center) |
| B. | SMS-GMSC |
| C. | MSC |
| D. | VLR |
| Answer» B. SMS-GMSC | |
| 5. |
What are the SMS categories? |
| A. | Point to Point |
| B. | Point to Multipoint |
| C. | Both P2P and P2M |
| D. | None |
| Answer» D. None | |
| 6. |
What is the maximum number of SMS that can be sent to a Mobile in one minute time? |
| A. | 1-5 |
| B. | 6-10 |
| C. | 11-15 |
| D. | 15-20 |
| Answer» C. 11-15 | |
| 7. |
Which is TRUE about maximum length of an SMS in a GSM network? |
| A. | 160 7-bit characters |
| B. | 140 8-bit characters |
| C. | 70 16-bit characters |
| D. | All |
| Answer» E. | |
| 8. |
What is the length of a single SMS in GSM architecture? |
| A. | 140 |
| B. | 150 |
| C. | 160 |
| D. | 256 |
| Answer» D. 256 | |
| 9. |
What is the problem with sending a huge number of SMS? |
| A. | SDCCH channels will be busy. |
| B. | So call handling capacity will be reduced. |
| C. | Free SDCCH will be less. So TCH allocation for new calls will be slow. |
| D. | All |
| Answer» E. | |
| 10. |
When NO call is in progress (IDLE mode), what is the channel used to send an SMS? |
| A. | TCH |
| B. | BCCH |
| C. | SACCH |
| D. | SDCCH |
| Answer» E. | |
| 11. |
During a phone call, an SMS (Short Message Service) is sent on which GSM Channel? |
| A. | SDCCH |
| B. | TCH |
| C. | SACCH |
| D. | BCCH |
| Answer» D. BCCH | |
| 12. |
Choose a method of selecting a Cell (sector) by a Mobile Station in a Multicellular environment. |
| A. | MS maintains a list of BCCH signal levels in descending order |
| B. | A good BCCH is chosen and the mobile tunes to that frequency to communicate with the BTS. |
| C. | After successful authentication, Mobile attachea to the cell and will be in IDLE mode without using TCH channel. |
| D. | All |
| Answer» E. | |
| 13. |
What is the duration of a HYPERFRAME? |
| A. | 3H 28M 2.2S |
| B. | 3H 28M 50S |
| C. | 3H 28M 53.76s |
| D. | 3.5H |
| Answer» D. 3.5H | |
| 14. |
What is the duration of a Super Frame? |
| A. | 5.12s |
| B. | 6.12s |
| C. | 7.12s |
| D. | 8.12s |
| Answer» C. 7.12s | |
| 15. |
A Hyper Frame contains ______ TDMA frames, which can be used for Frequency Hopping and Ciphering. |
| A. | 1024 x 26 TDMA |
| B. | 1024 x 51 TDMA |
| C. | 2048 x 26 TDMA |
| D. | 2048 x 51 x 26 TDMA |
| Answer» E. | |
| 16. |
A super frame contains _______ TDMA frames with all possible combinations of channels. |
| A. | 51 x 26 TDMA |
| B. | 51 x 51 TDMA |
| C. | 1024 x 26TDMA |
| D. | None |
| Answer» B. 51 x 51 TDMA | |
| 17. |
What are the TDMA Multi frames used for TCH/H and TCH/F ? |
| A. | 26 TDMA frames |
| B. | 51 TDMA frames |
| C. | 26 or 51 TDMA frames |
| D. | None |
| Answer» D. None | |
| 18. |
How many timeslots are present in a GSM TDMA frame whose time duration is 4.615ms? |
| A. | 4 |
| B. | 8 |
| C. | 16 |
| D. | 32 |
| Answer» C. 16 | |
| 19. |
One Burst Period is also called _____. |
| A. | Timeslot |
| B. | Group |
| C. | Byte |
| D. | None |
| Answer» B. Group | |
| 20. |
If there are two TRX in a given Sector or Cell, BCCH is defined on the _______ TRX or frequency. |
| A. | First |
| B. | Second |
| C. | First or second |
| D. | First and second |
| Answer» B. Second | |
| 21. |
The channel BCCH is always defined in which time slot? |
| A. | Timeslot 0 |
| B. | Timeslot 1 |
| C. | Timeslot 4 |
| D. | Timeslot 8 |
| Answer» B. Timeslot 1 | |
| 22. |
CCCH (Common Control Channel) channel contains all ________ channels. |
| A. | PCH on downlink |
| B. | AGCH on downlink |
| C. | RACH on uplink |
| D. | All |
| Answer» E. | |
| 23. |
What is the bitrate of SDCCH channel? |
| A. | 0.5kbps |
| B. | 0.8kbps |
| C. | 1kbps |
| D. | 1.2kbps |
| Answer» C. 1kbps | |
| 24. |
What are the functions of the dedicated control channel SDCCH? |
| A. | Location updates, Equipment validation |
| B. | Subscriber authentication, Ciphering initiation |
| C. | SMS delivery, Assigning a TCH for call or data |
| D. | All the above |
| Answer» E. | |
| 25. |
If FACCH signalling data is transmitted over TCH instead of Traffic data by setting a Stealing Flag, the process is called? |
| A. | Overloading |
| B. | Burdening |
| C. | Preemption |
| D. | None |
| Answer» D. None | |
| 26. |
What are the functions of a FACCH channel? |
| A. | Call Setup |
| B. | Call Termination |
| C. | Call Handovers |
| D. | All |
| Answer» E. | |
| 27. |
State True or False. SACCH is used to transmit Urgent signalling data like Call setup. |
| A. | TRUE |
| B. | False |
| C. | - |
| D. | - |
| Answer» C. - | |
| 28. |
Which is the Dedicated Control channel that is used to transmit Power Control data, Timing Advance (TA) data and other Radio link supervision signalling data? |
| A. | TCH |
| B. | SDCCH |
| C. | FACCH |
| D. | SACCH |
| Answer» E. | |
| 29. |
Which is a Full Duplex (both Downlink and Uplink), Point to Point Dedicated Control Channel below? |
| A. | SACCH (Slow Associated Control Channel) |
| B. | FACCH (Fast Associated Control Channel) |
| C. | SDCCH (Stand-alone Dedicated Control Channel) |
| D. | All |
| Answer» E. | |
| 30. |
Which is the downlink channel allotted to a Mobile after requesting with a RACH channel? |
| A. | AGH |
| B. | PCH |
| C. | SDCCH |
| D. | None |
| Answer» B. PCH | |
| 31. |
What is the Uplink channel used by a Mobile to request for a Channel? |
| A. | PCH |
| B. | BCCH |
| C. | RACH |
| D. | SDCCH |
| Answer» D. SDCCH | |
| 32. |
What is TRUE about a PCH (paging Channel) in a GSM Network? |
| A. | Paging works in a Downlink (BTS to Mobile) |
| B. | Paging alerts the MT (Mobile Terminal) about an incoming Call or SMS. |
| C. | Paging is a One to One communication initiated by NSS (Network Subsystem) |
| D. | All |
| Answer» E. | |
| 33. |
Choose a Common Control Channel below. |
| A. | PCH (paging Channel) |
| B. | AGCH (Access Grant Channel) |
| C. | RACH (Random Access Channel) |
| D. | None |
| Answer» E. | |
| 34. |
Which is TRUE about a CBCH channel of a GSM structure? |
| A. | It carries Short Messages |
| B. | It carries Service Messages |
| C. | It carries both Short Message and Service Messages |
| D. | None |
| Answer» D. None | |
| 35. |
What is TRUE about a SCH channel of GSM Architecture? |
| A. | It carries Time Synchronization data |
| B. | It contains BSIC (Base Station Identity Code) |
| C. | It contains TDMA Frame number |
| D. | All |
| Answer» E. | |
| 36. |
Which is the Broadcast channel that tells the MT (Mobile Station) which frequency to use in order to communicate with a BTS? |
| A. | BCCH |
| B. | FCCH |
| C. | SCH |
| D. | None |
| Answer» C. SCH | |
| 37. |
What ia TRUE about BCCH channel in a GSM structure? |
| A. | It is like a BEACON that guides a mobile to attach to a Cell |
| B. | It contains Configuration parameters like LAC (Location Area Code), CID (Cell Identity) and Neighbor cell info |
| C. | It is the first frequency to be sampled by a Mobile station. If parameters are ok, MT attaches to the Cell. |
| D. | All |
| Answer» E. | |
| 38. |
Choose a Broadcast channel in GSM Architecture? |
| A. | BCCH (Broadcast Control Channel) |
| B. | FCCH (Frequency Correction Channel) |
| C. | SCH (Synchronization Channel), CBCH (Cell Broadcast Channel) |
| D. | All |
| Answer» E. | |