| 1. | The GSM network is divided into the following three major systems : |
| a. | SS, BSS, OSS |
| b. | BSS, BSC, MSC |
| c. | CELL, BSC, OSS |
| d. | SS, CELL, MSC |
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Answer: (a).SS, BSS, OSS
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| 2. | The Mobile Application Protocol (MAP) typically runs on top of which protocol ? |
| a. | SNMP (Simple Network Management Protocol) |
| b. | SMTP (Simple Mail Transfer Protocol) |
| c. | SS7 (Signalling System 7) |
| d. | HTTP (Hyper Text Transfer Protocol) |
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Answer: (c).SS7 (Signalling System 7)
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| 3. | If a packet arrive with an M-bit value is '1' and a fragmentation offset value '0', then it is ______ fragment. |
| a. | First |
| b. | Middle |
| c. | Last |
| d. | All of the above |
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Answer: (a).First
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| 4. | The design issue of Datalink Layer in OSI Reference Model is |
| a. | Framing |
| b. | Representation of bits |
| c. | Synchronization of bits |
| d. | Connection control |
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Answer: (a).Framing
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| 5. | Coaxial cables are categorized by Radio Government rating are adapted for specialized functions. Category RG-59 with impedance 75Ω used for |
| a. | Cable TV |
| b. | Ethernet |
| c. | Thin Ethernet |
| d. | Thick Ethernet |
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Answer: (a).Cable TV
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| 6. | AES is a round cipher based on the Rijndal Algorithm that uses a 128-bit block of data. AES has three different configurations. ______ rounds with a key size of 128 bits, ______ rounds with a key size of 192 bits and ______ rounds with a key size of 256 bits. |
| a. | 5, 7, 15 |
| b. | 10, 12, 14 |
| c. | 5, 6, 7 |
| d. | 20, 12, 14 |
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Answer: (b).10, 12, 14
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| 7. | Data Encryption Techniques are particularly used for _______. |
| a. | protecting data in Data Communication System |
| b. | reduce Storage Space Requirement |
| c. | enhances Data Integrity |
| d. | decreases Data Integrity |
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Answer: (a).protecting data in Data Communication System
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| 8. | An example of a layer that is absent in broadcast networks is: |
| a. | Physical layer |
| b. | Presentation layer |
| c. | Network layer |
| d. | Application layer |
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Answer: (c).Network layer
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| 9. | The ATM cell is |
| a. | 48 bytes long |
| b. | 53 bytes long |
| c. | 64 bytes long |
| d. | 69 bytes long |
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Answer: (b).53 bytes long
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| 10. | The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is known as |
| a. | Bit stuffing |
| b. | Piggy backing |
| c. | Pipelining |
| d. | Broadcasting |
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Answer: (b).Piggy backing
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