Explore topic-wise MCQs in Computer Networks Mcqs.

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