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This section includes 85 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Networks Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The standard IEEE 802.11s uses |
| A. | OFDM |
| B. | DSSS |
| C. | FHSS |
| D. | DSDM |
| Answer» B. DSSS | |
| 2. |
In wireless network, an extended service set is a set of |
| A. | Connected basic service set |
| B. | All access point |
| C. | All stations |
| D. | None of the above |
| Answer» B. All access point | |
| 3. |
Which of the following is not used in WiMAX for communication? |
| A. | 2.3 GHz |
| B. | 2.4 GHz |
| C. | 2.5 GHz |
| D. | 3.5 GHz |
| Answer» C. 2.5 GHz | |
| 4. |
802.11 legacy specifies data rates of what? |
| A. | 11 Mbps |
| B. | 1 & 2 Mbps |
| C. | 5 Mbps |
| D. | 54 Mbps |
| Answer» C. 5 Mbps | |
| 5. |
What modulation technique does 802.11b wireless use? |
| A. | DSSS |
| B. | FDSS |
| C. | FMDS |
| D. | OFDM |
| Answer» B. FDSS | |
| 6. |
802.11g is downward compatible to what? |
| A. | 802.11a |
| B. | 802.11b |
| C. | 802.11i |
| D. | 802.11n |
| Answer» C. 802.11i | |
| 7. |
802.11i provides what? |
| A. | Quality of service |
| B. | Double the speed |
| C. | Additional security |
| D. | All of the above |
| Answer» D. All of the above | |
| 8. |
802.11a runs on what frequency? |
| A. | 5Ghz |
| B. | 2.4Ghz |
| C. | 4.8Ghz |
| D. | 3.6Ghz |
| Answer» B. 2.4Ghz | |
| 9. |
WEP stands for what? |
| A. | Wired equivalency protocol |
| B. | Wired equivalent privacy |
| C. | Wireless encryption protocol |
| D. | Wireless equivalent privacy |
| Answer» C. Wireless encryption protocol | |
| 10. |
802.11i is the same as what? |
| A. | WPA |
| B. | WEP |
| C. | 802.11g |
| D. | WPA2 |
| Answer» E. | |
| 11. |
WPA2 uses what, instead of RC4, used by WEP and WPA? |
| A. | AES |
| B. | RC4 |
| C. | RC3 |
| D. | 3DES |
| Answer» B. RC4 | |
| 12. |
802.11a offers greater speed than 802.11b but offers less _________. |
| A. | Speed |
| B. | Distance |
| C. | Channels |
| D. | Security |
| Answer» C. Channels | |
| 13. |
Which of the following refers to a standard or group of standards that are still being developed as a part of overall IEEE 802.11 WLAN support? |
| A. | 802.11x |
| B. | 802.11i |
| C. | Both of the above |
| D. | Neither of the above |
| Answer» D. Neither of the above | |
| 14. |
The Bluetooth network is called? |
| A. | Piconet |
| B. | Bluenet |
| C. | Sctternet |
| D. | Toothnet |
| Answer» B. Bluenet | |
| 15. |
The addressing scheme include up to _____addresses in IEEE 802.11. |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | None of the above |
| Answer» B. 5 | |
| 16. |
What does BAHO stands for? |
| A. | Base station assisted handover |
| B. | Base assisted handover |
| C. | Base assistance handover |
| D. | None of the above |
| Answer» B. Base assisted handover | |
| 17. |
The core concept used in cellular technology is |
| A. | Frequency reuse |
| B. | Code reuse |
| C. | TDM |
| D. | Transmission power saving |
| Answer» B. Code reuse | |
| 18. |
Base station always requests channels from? |
| A. | MCS |
| B. | BCS |
| C. | MSC |
| D. | BSC |
| Answer» B. BCS | |
| 19. |
Uplinks are also knowns as |
| A. | Reverse link |
| B. | BS link |
| C. | Forward link |
| D. | MS link |
| Answer» B. BS link | |
| 20. |
What are the devices that provide connectivity to WiMAX network? |
| A. | Gateway |
| B. | Access point |
| C. | Subscriber stations |
| D. | Repeaters |
| Answer» D. Repeaters | |
| 21. |
What does WPA stands for? |
| A. | Wired protected access |
| B. | Wifi protected access |
| C. | Wireless protected access |
| D. | Wifi process access |
| Answer» D. Wifi process access | |
| 22. |
A wireless network interface can work in |
| A. | Infrastructure mode |
| B. | Ad hoc mode |
| C. | Both a and b |
| D. | None of the above |
| Answer» D. None of the above | |
| 23. |
The control frame that is sent by the destination station is called |
| A. | Clear to send |
| B. | Request to sent |
| C. | Distributed Interframe Space |
| D. | Short Interframe Space |
| Answer» B. Request to sent | |
| 24. |
The field retry means retransmitting frame when its value is set to |
| A. | 0 |
| B. | 1 |
| C. | -1 |
| D. | Infinity |
| Answer» C. -1 | |
| 25. |
IEEE 802.11 have three categories of |
| A. | Frames |
| B. | Fields |
| C. | Signals |
| D. | Sequences |
| Answer» B. Fields | |
| 26. |
The access method of baseband layer is |
| A. | FDMA |
| B. | TDMA |
| C. | FSK |
| D. | CDMA |
| Answer» C. FSK | |
| 27. |
A BSS without an AP is called an |
| A. | Adhoc network |
| B. | Infrastructure network |
| C. | Connectionless network |
| D. | Channelization network |
| Answer» B. Infrastructure network | |
| 28. |
Bluetooth defines several protocols for the upper layers that uses |
| A. | UDP |
| B. | L2CAP |
| C. | HSP |
| D. | ITP |
| Answer» C. HSP | |
| 29. |
Peripheral devices can communicate through a small network, known as |
| A. | Wireless Network |
| B. | Bluetooth Network |
| C. | Adhoc Network |
| D. | Piconet Network |
| Answer» C. Adhoc Network | |
| 30. |
In Point Coordination Function, PCF Interframe space (PIFS) is shorter than the |
| A. | RTS |
| B. | SIFS |
| C. | DIFS |
| D. | CTS |
| Answer» D. CTS | |
| 31. |
Bluetooth allows the station to define a quality of |
| A. | Time Level |
| B. | Service Level |
| C. | Data Level |
| D. | Segment Level |
| Answer» C. Data Level | |
| 32. |
ACL stands for |
| A. | Asynchronous Connectionless Link |
| B. | Asynchronous Connection Link |
| C. | Asynchronous Connected Link |
| D. | Asynchronous Communication Link |
| Answer» B. Asynchronous Connection Link | |
| 33. |
DCF stands for |
| A. | Direct Control Function |
| B. | Distributed Control Function |
| C. | Direct Cooperate Function |
| D. | Distributed Coordination Function |
| Answer» E. | |
| 34. |
Distributed Coordination Function (DCF) uses the mechanism of |
| A. | CSMA/CD |
| B. | CSMA/CA |
| C. | TDMA |
| D. | FDMA |
| Answer» C. TDMA | |
| 35. |
The current version in frame control field is |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 36. |
Management frames, control frames and data frames are used by |
| A. | Wireless LANs |
| B. | Wireless MANs |
| C. | Wireless WANs |
| D. | None |
| Answer» B. Wireless MANs | |
| 37. |
If the value of sub field type is 1100 in control frames, then it contains the information of |
| A. | Request to send |
| B. | Clear to send |
| C. | Acknowledgement |
| D. | Sender |
| Answer» C. Acknowledgement | |
| 38. |
.. protocol is widely used on LAN in the MAC sub layer. |
| A. | CSMA |
| B. | TCP |
| C. | CSMA/CD |
| D. | GSM |
| Answer» D. GSM | |
| 39. |
In binary countdown protocol each station address bits are |
| A. | ANDed |
| B. | Ex - ORed |
| C. | ORed |
| D. | NORed |
| Answer» D. NORed | |
| 40. |
Multiple users share a common channel is called .. |
| A. | LAN |
| B. | WAN |
| C. | Contention |
| D. | CSMA/CD |
| Answer» D. CSMA/CD | |
| 41. |
. system is used for ground based radio broadcasting. |
| A. | Static channel allocation |
| B. | Dynamic channel allocation |
| C. | ALOHA |
| D. | CSMA |
| Answer» D. CSMA | |
| 42. |
Which IEEE 802 standard provides for a collision-free protocol? |
| A. | 802.2 |
| B. | 892.3 |
| C. | 802.1 |
| D. | 802.5 |
| Answer» E. | |
| 43. |
The first collision free protocol is . |
| A. | Binary countdown |
| B. | Basic bitmap |
| C. | Reservation protocol |
| D. | SAP |
| Answer» C. Reservation protocol | |
| 44. |
Military vehicles on a battlefield with no existing infrastructure will deploy network. |
| A. | MANET |
| B. | Cell Network |
| C. | LAN |
| D. | Wi-Fi |
| Answer» B. Cell Network | |
| 45. |
The frequency range of wireless LAN is |
| A. | 900 MHz bands |
| B. | 2GHz bands |
| C. | 5 GHz bands |
| D. | All of these |
| Answer» E. | |
| 46. |
_______ are wireless network standard with a data rate of only 2 Mbps . |
| A. | IEEE 802.11a |
| B. | IEEE802.11b |
| C. | IEEE803.11a |
| D. | IEEE803.11b |
| Answer» B. IEEE802.11b | |
| 47. |
What is the type of network in which the topology change from time to time? |
| A. | Wi-Fi |
| B. | Cell Network |
| C. | LAN |
| D. | MANET |
| Answer» E. | |
| 48. |
The processes that keep track of all mobile hosts visiting the area is .. |
| A. | Home agent |
| B. | Mobile agent |
| C. | Foreign agent |
| D. | User agent |
| Answer» D. User agent | |
| 49. |
The hosts which are basically stationary hosts who move from one fixed site to another from time to time but use the network only when they are physically connected to it are called . |
| A. | Migratory hosts |
| B. | Stationary hosts |
| C. | Mobile hosts |
| D. | Random hosts |
| Answer» B. Stationary hosts | |
| 50. |
The hosts who compute on the run and want to maintain their connections as they move around |
| A. | Migratory hosts |
| B. | Stationary hosts |
| C. | Mobile hosts |
| D. | Random hosts |
| Answer» D. Random hosts | |