46.
The physical layer provides
__________
a.
mechanical specifications of
electrical
connectors and
cables
b.
electrical specification of
transmission
line signal level
c.
specification for IR over
optical
fiber
d.
all of the mentioned
Answer:
Option(d)
47.
In asynchronous serial
communication
the physical layer
provides
___________
a.
start and stop signalling
b.
flow control
c.
both start & stop signalling
and
flow control
d.
only start signalling
Answer:
Option(c)
48.
The physical layer is responsible for
_____
a)
line coding
b)
channel coding
c)
modulation
d)
all of the mentioned
Answer:
Option(d)
49.
The physical layer translates logical
communication
requests from the
______
into hardware specific
operations.
a.
data link layer
b.
network layer
c.
trasnport layer
d.
application layer
Answer:
Option(a)
50.
A single channel is shared by multiple
signals
by _____
a.
analog modulation
b.
digital modulation
c.
multiplexing
d.
phase modulation
Answer:
Option(c)
51.
Wireless transmission of signals can
be
done via ___________
a.
radio waves
b.
microwaves
COMPUTER
NETWORKS 2020-21
8 University Academy
c.
infrared
d.
all of the mentioned
Answer: Option(d)
52. The IETF
standards documents are called
a) RFC
b) RCF
c) ID
d) DFC
Answer: a
53. In the layer hierarchy
as the data packet moves from the upper to the lower layers, headers are
a) Added
b) Removed
c) Rearranged
d) Modified View Answer Answer: a.
54. The structure or format of data is
called
a) Syntax
b) Semantics
c) Struct
d) Formatting
Answer: a
4. Communication between a computer and a keyboard involves
transmission.
a) Automatic
b) Half-duplex
c) Full-duplex
d) Simplex
Answer: d
55. The first Network was called
a) CNNET
b) NSFNET
c) ASAPNET
d) ARPANET
Answer: d
56. A is the physical path over which a message travels.
a) Path
b) Medium
c) Protocol
d) Route
Answer: b
57. Which organization has authority over interstate and
international commerce in the communications field?
a) ITU-T
b) IEEE
c) FCC
d) ISOC
Answer: c.
58. Which of this is not a network edge device?
a) PC
b) Smartphones
c) Servers
d) Switch Answer: d
59.
A set of rules that governs data communication.
a) Protocols
b) Standards
c) RFCs
d) Servers
Answer: a
60. Three or more devices share a link in _ connection.
a) Unipoint
b) Multipoint
c) Point to point
d) Simplex
Answer: b
 Questions | PDF | Quiz To test your Knowledge 1000 MCQs | Geekforgeeks.in){kind=link}
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