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Data Communication MCQ
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Data Communication MCQs With Answers
1: In the type of error, two or more bits in the da a unit will be changed.
2: The message 1110 sent by a source is received by a destination as 1011. This is __ _type of error.
3: MAC stands for?
Main Access Control
Media Access Controller
Media Access Control
Mandatory Access Control
4: DSL stands for
digital subscriber line
data subscriber line
digital switched line
data switched line
5: If the Hamming distance between the sent and received code word is then it shows that the received data is corrupted.
6: Fast Ethernet has a data rate of Mbps.
7: The payload field of the PPP frame is of variable size and it can carry maximum data up to
8: is/are un-reliable protocol(s)
IP and UDP
IP and TCP
9: One of the most common protocols for point-to-point access is
10: is an Authentication Protocol, which is used by the PPP to authenticate passwords
11: CDMA stands for
Carrier Data Multiple Access
Camer Division Multiple Access
Code Data Multiple Access
Code Division Multiple Access
12: Transmission technology (based on Ethernet) provides a data role of 1 billion bits per second
13: Works with topologies in which one device is designated as a primary station and the other devices are secondary status
None of the given
14: The message 1110 sent by a source is received destination as 1011. This is a type of error.
15: In which controlled-access method all data e cha must be made through the primary device even if ven ultimate destination is a secondary device?
16: MAC address is of
17: S-frames in High-Level Data Link Control (HDL used to transfer
18: CHAP is an Authentication Protocol, which is a process to authenticate user information.
19: MAC address is of
20: If we need to correct a single error in an 8-bit data unit, we need to consider possible error locations.
21: In order to find the Hamming distance between two pairs of words. logical operation is used.
22: S-frames in High-Level Data Link Control (HDLC) are only used to transfer information.
23: The Data Link layer provides services to the layer.
24: uses a fiber-optic cable.
25: What was the main drawback of the ALOHA Random-Access method?
Redundancy in Data
Inconsistent Data rate
All of the given.
26: The……….protocol uses both flow and error control.
27: In which controlled-access method all data exchanges must be made through the primary device even when the ultimate destination is a secondary device?
28: To control and manage the transfer of data, a protocol called Point-to-Point Protocol (PPP) is used at the layer.
29: Congestion Control is a feature of
30: No matter whether the link is dedicated or broadcast, the data link control (DLC) layer provides services between
Source and destination PCs
Tow adjacent nodes
31: The payload field of the PPP frame is of variable size and it can carry maximum data up to
32: In even parity check code, the value of syndrome is if the number of 1s is even.
33: The extra bits added with the original data for error detection/correction are called
34: The payload field of the PPP frame is of variable size and it can carry maximum data up to
35: In the Ethernet frame, both destination and sender addresses are of length.
36: protocol, the sender sends one frame at a time and waits for an acknowledgment before sending the next one.
37: A personal computer or workstation on an Ethernet network must have a card.
None of the given
38: In Leach band is reserved for a specific station and it belongs to the station all the time.
39: Error correction is more than the error detection.
40: When we represent the data in CDMA, if a stat then it sends_
41: In order to resolve the link-layer address of the new first generated ARP request is always in
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