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Fundamentals of Network Communication Quiz

Fundamentals of Network Communication Quiz Answer. In this post you will get Quiz Answer & Assignment Of Fundamentals of Network Communication

 

Fundamentals of Network Communication Quiz

Offered By ”University of Colorado System”

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Week- 1

Graded Assessment – Communication Networks and Services

 

1.
Question 1

Which of
following protocol is HTTP built upon?

2 points

  • TCP
  • UDP
  • IP
  • SMTP

2.
Question 2

Which of
following requirements are necessary for packet networks to support
multiple and diverse applications?

2 points

  • Transfer arbitrary message size
  • Low delay for interactive applications
  • Packets have maximum length
  • All of the above

3.
Question 3

What was the
concern of the telephone system that motivated the ARPANET design?

2 points

  • Scalability
  • Vulnerability
  • Efficiency
  • None of the above

4.
Question 4
Which of the following is an application layer protocol?

2 points

  • TCP
  • HTTP
  • UDP
  • DNS

5.
Question 5
Which of the following are features of ARPANET design?

2 points

  • Connectionless packet transmission
  • Routing tables at the packet switches
  • Destinations identified by unique addresses
  • All of the above

6.
Question 6
Bluetooth is an example of

1 point

  • Personal Area Network
  • Metropolitan Area Network
  • Wide Area Network
  • Local Area Network

7.
Question 7
In the layer hierarchy as the data packet moves from the upper to the lower layers, headers are

1 point

  • Added
  • Rearranged
  • Removed
  • Modified

8.
Question 8
The ________ is the physical path over which a message travels

1 point

  • Path
  • Protocol
  • Medium
  • Route

9.
Question 9
Three or more devices share a link in ________ connection

1 point

  • Unipoint
  • Multipoint
  • Point to Point
  • None of the above

10.
Question 10
Which of the following is true for Transport Control Protocol

1 point

  • Connection oriented
  • Process to Process
  • Transport layer protocol
  • Connectionless

 

 

Week- 2

Graded Assessment – Layered Architecture

1.
Question 1

In a LAN,
which address is used to transfer frames to appropriate destination?

2 points

IP address

Physical address

Domain name

None of the above

2.
Question 2

Suppose an
application layer entity wants to send an L-byte message to its peer
process, using an existing TCP connection. The TCP segment consists
of the message plus 20 bytes of header. The segment is encapsulated
into an IP packet that has an additional 20 bytes of header. The IP
packet in turn goes inside an Ethernet frame that has 18 bytes of
header and trailer. What is the bandwidth utilization in terms of
the percentage of the transmitted bits in the physical layer
corresponds to message information if L = 500 bytes?

 

2 points

90%

70%

80%

100%

3.
Question 3
Of the following services, which service(s) does the IP layer provides?

2 points

Error control

Flow control

Connection-based data transfer

None of the above

4.
Question 4

Which of
the following is true about the ways in which the OSI reference
model and TCP/IP reference model differ.

2 points

TCP/IP model does not have session layer, but OSI model has

They differ in the number of layers

 

TCP/IP model does not have presentation layer, but OSI model has

All of the above

5.
Question 5

Which of following statements is true about how the data link layer
and transport layer differ?

 

2 points

Data link
layer is concerned with framing and the transport layer is not

Data link
layer is concerned with flow control and the transport layer is not

Data link
layer is concerned with multiplexing and the transport layer is not

All of the above

6.
Question 6
This layer is an addition to OSI model

1 point

Application layer

Presentation layer

Session layer

Presentation layer and Session layer

7.
Question 7
The functionalities of presentation layer includes

1 point

Data compression

Data encryption

Data decryption

All of the above

 

 

Week- 3

Graded Assessment – Socket API & Digital Transmissions

 

1.
Question 1

In BSD socket
API, which call is usually used for transmitting data in the
connectionless mode?

1 point

accept()

connect()

sendto()

None of the above

2.
Question 2

Which of
following statement about TCP/UDP sockets is wrong?

1 point

TCP socket is stream oriented

UDP socket is
block oriented

TCP is faster
than UDP

All of the above

3.
Question 3

Which of
following are commonly used as digital communication medium?

1 point

Twisted pair

All of the above

Optical fiber

Coaxial cable

4.
Question 4

Consider a
network link that has distance of 100 meters, and signal traverses
at the speed of light in cable 2.5 x 10^8 meters per second. The
link has transmission bandwidth of 100 megabits/second (100 x 10^6
bits per second). The packet size is 400 bits. What is the signal
propagation delay?

1 point

4 x 10^-9 seconds

None of the above

4 x 10^-7 seconds

4 x 10^-6 seconds

5.
Question 5
Consider
a network link that has distance of 100 meters, and signal traverses
at the speed of light in cable 2.5 x 10^8 meters per second. The link
has transmission bandwidth of 100 megabits/second (100 x 10^6 bits
per second). The packet size is 400 bits. What is the packet
transmission delay?

1 point

4 x 10^-7 seconds

4 x 10^-6 seconds

None of the above

4 x 10^-9 seconds

6.
Question 6
An API allows application programs to access certain resources through a predefined interface?

1 point

True

False

7.
Question 7
In transport protocol, which of the following statements is true for User Datagram Protocol

1 point

It enables best-effort connectionless transfer of individual block of information

It enables connection-oriented reliable transfer of individual block of information

It enables best-effort connectionless reliable transfer of a stream of bytes

None of the above

8.
Question 8
Which of the following sentences are true for connectionless stream mode of service

1 point

Send/receive to/from multiple peer processes

No setup overhead and delay

Destination address with each block

Multiple write/read between peer processes

9.
Question 9
In transmission delay, in order to reduce the number of bits in a message we use data compression

1 point

True

False

10.
Question 10
Which of the following is true of data compression algorithms

1 point

Modify data headers

Represent the information using fewer bits

Recover information approximately

Recover original information exactly

 

 

Week- 4

Graded Assessment – Error Control

1.
Question 1

Given an
information polynomial code I(x) = X^7 + x^6 + x^1 + 1, which is its
corresponding per-bit information frame?

2 points

None of the above

01100011

11000011

10100010

2.
Question 2

What is the
remainder obtained by dividing x^7 + x^5 + 1 by the generator
polynomial x^3 + 1?

2 points

x^2 + x

None of the above

x^2 + 1

x^2 + x + 1

3.
Question 3

Given a
generator polynomial g(x) = x^3 + x + 1. Consider the information
sequence 1001. By CRC method, what is the resulted codeword for
transmission?

2 points

1001111

1010110

1001000

1001110

4.
Question 4

Which of
following generator polynomial can detect all single bit errors in
an information frame?

2 points

g(x) = x

g(x) = x^2

g(x) = x + 1

All of the above

5.
Question 5

Internet
protocols use check bits to detect errors, instead of using CRC
polynomial. The primary rationale is

2 points

Strength of
error detection capability

Simplicity of implementation

CRC
polynomial cannot work for Internet protocols

None of the above

6.
Question 6
The two basic approaches in error control are error prevention and detection, and error correction and re-transmission

1 point

True

False

7.
Question 7
Find parity bit for 1001011

1 point

0

1

2

None of the above

8.
Question 8
The divisor in a cyclic code is normally called the _________.

1 point

Degree

Redundancy

Generator

None of the above

9.
Question 9
The checksum of 0000 and 0000 is

1 point

0101

1010

1111

0000

10.
Question 10
In ASCII, a single parity bit code can detect ________ errors.

1 point

An even number of

Two

An odd number of

No errors

 

 

Week- 5

Peer-graded Assignment: Fundamentals of Network and Digital Communication

 

Download

 

 

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