Computer Networks Questions & Answers – Packet Switching & Circuit Switching
1. A local telephone network is an
example of a _______ network.
a) Packet switched
b) Circuit switched
c) Both Packet switched and Circuit switched
d) Line switched
Answer: b
Explanation: Circuit switching is connection oriented switching technique.
Whereas in the case of packet switching, it is connectionless. Circuit
switching is implemented in the Physical layer, whereas packet switching is
implemented in the Network layer.
2. Most packet switches use this
principle ____________
a) Stop and wait
b) Store and forward
c) Both Stop and wait and Store and forward
d) Stop and forward
Answer: b
Explanation: The packet switch will not transmit the first bit to outbound link
until it receives the entire packet.
3. If there are N routers from
source to destination, a total end to end delay in sending packet P(L->
number of bits in the packet R-> transmission rate)
a) N
b) (N*L)/R
c) (2N*L)/R
d) L/R
Answer: b
Explanation: The equation to find the end to end delay when no. of bits,
transmission rate and no. of routers is given by (N*L)/R.
4. What are the Methods to move data
through a network of links and switches?
a) Packet switching
b) Circuit switching
c) Line switching
d) Both Packet switching and Circuit switching
Answer: d
Explanation: Packet switching and Circuit switching are two different types of
switching methods used to connect the multiple communicating devices with one
another.
5. The resources needed for
communication between end systems are reserved for the duration of the session
between end systems in ________
a) Packet switching
b) Circuit switching
c) Line switching
d) Frequency switching
Answer: b
Explanation: In circuit switching, a physical path between the sender and
receiver is established. This path is maintained until the connection is
needed.
6. As the resouces are reserved
between two communicating end systems in circuit switching, this is achieved
___________
a) authentication
b) guaranteed constant rate
c) reliability
d) store and forward
Answer: b
Explanation: Circuit switching is connection oriented and is always implemented
in the physical layer. Once a path is set, all transmission occurs through the
same path.
7. In _________ resources are
allocated on demand.
a) packet switching
b) circuit switching
c) line switching
d) frequency switching
Answer: a
Explanation: In packet switching, the bits are received in out of order and
need to be assembled at the receiver end. Whereas in the case of Circuit
switching, all the bits are received in order.
a) Packet switched
b) Circuit switched
c) Both Packet switched and Circuit switched
d) Line switched
Explanation: Circuit switching is connection oriented switching technique. Whereas in the case of packet switching, it is connectionless. Circuit switching is implemented in the Physical layer, whereas packet switching is implemented in the Network layer.
a) Stop and wait
b) Store and forward
c) Both Stop and wait and Store and forward
d) Stop and forward
Explanation: The packet switch will not transmit the first bit to outbound link until it receives the entire packet.
a) N
b) (N*L)/R
c) (2N*L)/R
d) L/R
Explanation: The equation to find the end to end delay when no. of bits, transmission rate and no. of routers is given by (N*L)/R.
a) Packet switching
b) Circuit switching
c) Line switching
d) Both Packet switching and Circuit switching
Explanation: Packet switching and Circuit switching are two different types of switching methods used to connect the multiple communicating devices with one another.
a) Packet switching
b) Circuit switching
c) Line switching
d) Frequency switching
Explanation: In circuit switching, a physical path between the sender and receiver is established. This path is maintained until the connection is needed.
a) authentication
b) guaranteed constant rate
c) reliability
d) store and forward
Explanation: Circuit switching is connection oriented and is always implemented in the physical layer. Once a path is set, all transmission occurs through the same path.
a) packet switching
b) circuit switching
c) line switching
d) frequency switching
Answer: a
Explanation: In packet switching, the bits are received in out of order and need to be assembled at the receiver end. Whereas in the case of Circuit switching, all the bits are received in order.
Explanation: In packet switching, the bits are received in out of order and need to be assembled at the receiver end. Whereas in the case of Circuit switching, all the bits are received in order.
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