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Question 1 of 60 Quiz ID: q1

Which of the following is NOT a type of unswitched network?

Point-to-point

Multi-point

Broadcast

Virtual circuit

Question 2 of 60 Quiz ID: q2

How many links are required to directly connect 10 nodes in an unswitched network?

10 links

20 links

45 links

100 links

Question 3 of 60 Quiz ID: q3

What is the main difference between switched and unswitched networks?

Switched networks are faster

In switched networks, data passes through intermediate nodes

Switched networks use wireless connections

Unswitched networks are more secure

Question 4 of 60 Quiz ID: q4

Why are switched networks preferred over unswitched networks for large-scale deployments?

They provide better security

They are not cost effective to have all nodes directly connected

They use less bandwidth

They have lower latency

Question 5 of 60 Quiz ID: q5

What is the primary purpose of switching in networks?

To increase network speed

To get signals to the correct destination

To reduce network costs

To improve security

Question 6 of 60 Quiz ID: q6

What is the difference between routing and switching?

Routing is faster than switching

Routing identifies the route, switching transfers data between networks/links

Switching is more secure than routing

There is no difference

Question 7 of 60 Quiz ID: q7

Which of the following is NOT a type of switching mentioned in the lecture?

Circuit switching

Message switching

Packet switching

Frequency switching

Question 8 of 60 Quiz ID: q8

In circuit switching, what happens once a dedicated communications path is established?

The path can be optimized during transmission

Circuit capacity must be paid for whether used or not

The path automatically terminates after 5 minutes

Multiple users can share the same path

Question 9 of 60 Quiz ID: q9

What is a disadvantage of circuit switching once the route is set up?

High transmission delays

Cannot be optimized

Requires constant monitoring

Uses too much bandwidth

Question 10 of 60 Quiz ID: q10

Circuit switching is most suitable for which type of communication?

Computer-to-computer data transfer

Human-to-human telephone communications

File transfers

Email transmission

Question 11 of 60 Quiz ID: q11

Why is circuit switching less suitable for computer communications?

It's too expensive

Setup time and cannot handle data bursts

It's not secure enough

It uses too much power

Question 12 of 60 Quiz ID: q12

In space-division switching, what happens to each call?

Each call shares the same path

Each call takes a different path through the switch

Each call is divided into time slots

Each call is compressed

Question 13 of 60 Quiz ID: q13

What is a crossbar in the context of space-division switching?

A type of cable connector

A simple space-division switch with crosspoints that can be turned on or off

A routing algorithm

A type of multiplexer

Question 14 of 60 Quiz ID: q14

In time-division switching, how is each call handled?

Each call takes a different physical path

Each call is divided into small pieces assigned time-slots

Each call waits in a queue

Each call is broadcast to all destinations

Question 15 of 60 Quiz ID: q15

What is the function of a multiplexer in time-division switching?

To separate different calls

To aggregate sessions from N input lines to output running N times faster

To store data temporarily

To encrypt data

Question 16 of 60 Quiz ID: q16

What does a demultiplexer do in time-division switching?

Combines multiple signals

Distributes sessions from one input to N outputs running N times slower

Amplifies signals

Filters noise

Question 17 of 60 Quiz ID: q17

What is Time Slot Interchange (TSI)?

A method to encrypt time slots

Writing to shared memory and reading in different order

A way to compress data

A routing protocol

Question 18 of 60 Quiz ID: q18

What is a major efficiency problem with circuit switching?

Too much processing power required

The circuit may be idle much of the time

It requires too many cables

It's too slow

Question 19 of 60 Quiz ID: q19

What type of delay is associated with circuit switching?

Processing delay

Time needed to set up the circuit

Transmission delay

Queuing delay

Question 20 of 60 Quiz ID: q20

How are messages transmitted in message switching?

All at once through a dedicated circuit

Entire messages sent store-and-forward, hop-by-hop

Broken into packets and reassembled

Through broadcast to all nodes

Question 21 of 60 Quiz ID: q21

What is a characteristic of message progress in message switching?

Messages travel at constant speed

Messages make intermittent progress as each hop becomes available

Messages are duplicated at each hop

Messages are compressed during transmission

Question 22 of 60 Quiz ID: q22

What problem can very long messages cause in message switching?

They get corrupted

They hog buffer space at intermediate nodes and links

They cannot be transmitted

They require special hardware

Question 23 of 60 Quiz ID: q23

What does a packet switching network comprise?

Only end hosts

A set of nodes (switches/routers) connected by links

A single central switch

Wireless access points only

Question 24 of 60 Quiz ID: q24

How is the data stream handled in packet switching?

Sent as one large message

Divided into packets, each with data and header

Compressed and encrypted

Stored permanently at each node

Question 25 of 60 Quiz ID: q25

What does each packet contain in packet switching?

Only user data

Data and a header

Only routing information

Compressed data only

Question 26 of 60 Quiz ID: q26

How do packets reach their destination in packet switching?

Through a pre-established circuit

By making their way through the network from node to node

Through direct point-to-point connections only

By broadcasting to all nodes

Question 27 of 60 Quiz ID: q27

Which of the following is NOT a type of packet switching mentioned?

Virtual Circuit Switching

Datagram Switching

Label Switching

Circuit Switching

Question 28 of 60 Quiz ID: q28

What happens before data transfer in virtual circuit packet switching?

Data is compressed

Connection setup between end stations

All routes are tested

Packets are numbered

Question 29 of 60 Quiz ID: q29

How are packets sent in virtual circuit switching?

Each packet finds its own route

Packets are sent along a pre-chosen route

Packets are broadcast to all nodes

Packets are stored at the source

Question 30 of 60 Quiz ID: q30

What is a disadvantage of virtual circuit packet switching?

High bandwidth usage

Set-up delay before sending data

Poor reliability

Complex packet headers

Question 31 of 60 Quiz ID: q31

What is a Virtual Circuit Identifier (VCI)?

A permanent address for each node

An identifier assigned to each packet for its virtual circuit

A type of encryption key

A hardware component

Question 32 of 60 Quiz ID: q32

In virtual circuit switching, are the same VCIs used on all links?

Yes, VCIs remain constant throughout the path

No, different VCIs are used on each link

Only on adjacent links

VCIs are not used

Question 33 of 60 Quiz ID: q33

How are packets routed in datagram packet switching?

Along pre-established circuits

Independently by each packet

Through a central controller

Using broadcast methods

Question 34 of 60 Quiz ID: q34

What is an advantage of datagram packet switching regarding setup?

Faster transmission speed

No initial circuit setup costs or delays

Better security

Lower packet overhead

Question 35 of 60 Quiz ID: q35

What is a disadvantage of datagram packet switching?

Requires connection setup

Switching each packet is relatively expensive

Cannot handle multiple destinations

Requires special hardware

Question 36 of 60 Quiz ID: q36

How does datagram switching handle network failures?

It cannot handle failures

It adapts to node and link failures during transmission

It requires manual reconfiguration

It stops all transmission

Question 37 of 60 Quiz ID: q37

What can happen to packet order in datagram switching?

Packets always arrive in order

Datagrams may arrive out of order

Packets are automatically reordered

Order is not important

Question 38 of 60 Quiz ID: q38

What does a switch use for routing decisions in a datagram network?

Virtual circuit identifier

Routing table based on destination address

Source address only

Random selection

Question 39 of 60 Quiz ID: q39

What happens to the destination address during a packet's journey in datagram networks?

It changes at each hop

It remains the same during the entire journey

It is removed after the first hop

It is encrypted

Question 40 of 60 Quiz ID: q40

What is the basic principle of label switching?

Route everywhere, switch nowhere

Route at edges, switch in core

Switch at edges, route in core

Broadcast all packets

Question 41 of 60 Quiz ID: q41

When is a label attached to a packet in label switching?

At the destination

When it arrives at a label switched network

At every intermediate node

Only for error packets

Question 42 of 60 Quiz ID: q42

How do core switches handle packets in label switching?

They examine the full destination address

They switch based on the label and substitute a new label for the next hop

They broadcast to all ports

They store and forward entire messages

Question 43 of 60 Quiz ID: q43

What happens to labels as packets traverse through a label switched network?

Labels remain constant

Labels are substituted at each hop

Labels are removed after first hop

Multiple labels are added

Question 44 of 60 Quiz ID: q44

What is cell switching?

A type of circuit switching

A switching method mentioned in the summary

A wireless switching technique

A type of message switching

Question 45 of 60 Quiz ID: q45

According to the switching strategies diagram, which switching method shows messages progressing in complete blocks?

Circuit switching

Message switching

Packet switching

Label switching

Question 46 of 60 Quiz ID: q46

Which switching method would be most appropriate for real-time voice communication?

Message switching

Circuit switching

Datagram packet switching

Label switching

Question 47 of 60 Quiz ID: q47

Which switching method provides the best resource utilization for bursty data traffic?

Circuit switching

Packet switching

Message switching with large buffers

Space-division switching

Question 48 of 60 Quiz ID: q48

What is the main trade-off between virtual circuit and datagram packet switching?

Speed vs. reliability

Setup overhead vs. per-packet processing overhead

Security vs. performance

Cost vs. complexity

Question 49 of 60 Quiz ID: q49

In which scenario would message switching be preferred over packet switching?

Real-time communications

When network reliability is poor and store-and-forward is beneficial

High-speed data transfer

Voice over IP applications

Question 50 of 60 Quiz ID: q50

What is the primary advantage of using intermediate nodes in switched networks?

Increased security

Reduced total number of required links compared to full mesh

Higher data transmission speeds

Better error detection

Question 51 of 60 Quiz ID: q51

Which type of switching allows for the most efficient use of network bandwidth?

Circuit switching

Packet switching

Message switching

Space-division switching

Question 52 of 60 Quiz ID: q52

What happens to crosspoints in a crossbar switch?

They are permanently connected

They can be turned on or off

They automatically adjust timing

They amplify signals

Question 53 of 60 Quiz ID: q53

What is the relationship between input and output speeds in time-division multiplexing?

Output runs at the same speed as input

Output runs N times as fast as input for N input lines

Output runs slower than input

Speed relationship varies randomly

Question 54 of 60 Quiz ID: q54

Why is circuit switching inefficient for computer communications?

Computers communicate too slowly

Computer traffic is typically bursty with idle periods

Computers require error-free transmission

Computer data is too complex

Question 55 of 60 Quiz ID: q55

What is a key characteristic that distinguishes packet switching from message switching?

Use of headers

Data is divided into smaller units (packets) rather than sent as complete messages

Use of intermediate nodes

Store-and-forward operation

Question 56 of 60 Quiz ID: q56

In label switching, what is the main benefit of having labels?

Enhanced security

Simplified and faster switching in core nodes

Better error detection

Reduced packet size

Question 57 of 60 Quiz ID: q57

Which switching method requires the caller, callee, and all intervening nodes to be available simultaneously?

Packet switching

Circuit switching

Message switching

Label switching

Question 58 of 60 Quiz ID: q58

What is the main disadvantage of having very long messages in message switching?

They cannot be transmitted

They hog buffer space and links at intermediate nodes

They get corrupted easily

They require special protocols

Question 59 of 60 Quiz ID: q59

Which statement best describes the packet forwarding process in datagram networks?

All packets follow the same predetermined path

Each packet is independently routed based on its destination address

Packets are broadcast to all possible destinations

Routing decisions are made only at the source

Question 60 of 60 Quiz ID: q60

What is the primary purpose of the header in packet switching?

To compress the data

To provide control information for routing and handling

To encrypt the payload

To detect transmission errors only

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