WorksheetsNetworking Concepts Quiz
Total questions: 50
Worksheet time: 25mins
In the context of the network edge, which of the following is considered an end system?
Router
Switch
Client computer
Access Point
What is the main function of the network core?
Data encryption
Packet forwarding
Application execution
Network management
Which of the following contributes directly to end-to-end delay?
Transmission delay
Browser caching
Access control
Signal modulation
The network core primarily uses which architecture?
Peer-to-peer
Circuit switching
Client-server
Packet switching
Which component is not part of the network edge?
Web browser
Email server
Core router
Smartphone
Which delay is dependent on the amount of data and the transmission rate?
Processing delay
Propagation delay
Transmission delay
Queuing delay
Which layer is responsible for reliable data transfer?
Application layer
Transport layer
Network layer
Data Link layer
Which of the following does not typically cause packet loss?
Buffer overflow
Congested routers
Insufficient bandwidth
Large propagation distance
Which of the following delays is the most variable and unpredictable?
Processing delay
Transmission delay
Propagation delay
Queuing delay
Which of the following models uses layered architecture to define protocols?
Client-server
Star topology
OSI Model
Data-centric model
Which of the following is not part of the five-layer Internet protocol stack?
Application
Network
Session
Transport
Which historical development enabled the birth of packet switching?
Development of TCP
Creation of OSI model
ARPANET
Establishment of HTTP
The term “store and forward” is associated with:
Circuit switching
Network access layer
Packet switching
Data link encryption
Throughput is defined as:
Total delay per hop
Rate of packet generation
Number of bits successfully delivered per time unit
Number of packets dropped
What is the impact of congestion on packet delivery?
Reduces header size
Decreases propagation speed
Increases queuing delay
Decreases data link rate
Which of the following refers to the time needed to examine packet header?
Propagation delay
Processing delay
Queuing delay
Transmission delay
Which layer is directly above the network layer in the Internet model?
Data Link
Transport
Application
Session
Which of the following layers ensures host-to-host delivery?
Network layer
Transport layer
Application layer
Data Link layer
The Internet was initially developed by:
IBM
Bell Labs
DARPA
CERN
Which delay does not depend on link bandwidth?
Queuing delay
Transmission delay
Propagation delay
Processing delay
Which device operates only at the network edge?
Router
Bridge
Host
Gateway
Protocol layering helps in:
Increasing propagation speed
Reducing signal interference
Abstracting functions and simplifying design
Compressing packet headers
A service model that does not guarantee delivery is called:
Reliable service
Datagram service
Connection-oriented service
Acknowledged service
If a packet travels through 5 routers, each with a transmission delay of 10ms, what is total transmission delay?
10ms
50ms
5ms
100ms
Which metric indicates the maximum possible data transfer rate?
Round-trip time
End-to-end delay
Bandwidth
Jitter
In early ARPANET, what was used for inter-host communication?
HTTP
NCP
SMTP
FTP
Which layer is responsible for process-to-process communication?
Network
Data link
Transport
Physical
A switch generally operates at which layer?
Physical
Transport
Data Link
Network
Which of the following describes latency most accurately?
Total packets sent
End-to-end delay
Packets lost in transit
Number of hops
In the Internet’s layered architecture, which layer is closest to the user?
Data link
Application
Transport
Network
Which component is not typically involved in the network core?
Backbone router
ISP switch
End system
Aggregation router
Which of the following best represents the relationship between delay and throughput?
Independent
Always inversely proportional
Always directly proportional
Delay determines throughput
Which of the following is most likely to cause jitter?
Fixed propagation speed
Constant bandwidth
Queuing variation
Header corruption
Which of the following statements about the Internet history is true?
TCP was used in the original ARPANET
HTTP predates ARPANET
ARPANET initially connected universities
DNS was built before NCP
Which of the following types of delay is constant for a given link length and signal speed?
Processing delay
Transmission delay
Propagation delay
Queuing delay
In a layered protocol stack, headers are:
Removed as we go down the stack
Added at every layer during encapsulation
Shared between layers
Only present in the transport layer
In a store-and-forward network, each router:
Transmits bits immediately
Requires acknowledgment for each packet
Waits until entire packet is received
Uses circuit switching
Which protocol layer provides services directly to user applications?
Data link
Application
Network
Transport
Which of the following does not affect throughput?
Link bandwidth
Congestion level
Error rate
MAC address
The first message-switching network was:
Internet
ARPANET
NPL Network
NSFNET
What is the major drawback of circuit switching compared to packet switching?
Lower throughput
Lower latency
Higher protocol overhead
More efficient under congestion
Which layer is responsible for logical addressing?
Application
Transport
Data Link
Network
Which layer performs segmentation and reassembly of messages?
Transport
Network
Physical
Data Link
What does it mean if a service is “connectionless”?
It establishes a dedicated path
It confirms delivery
It uses acknowledgments
It sends data without establishing a session
TCP/IP protocol stack was formally standardized by:
ISO
ITU
IETF
IEEE
What is the typical unit of measurement for throughput?
Seconds
Bits
Bits per second
Packets
Packet loss occurs mainly due to:
High transmission rate
Congestion and buffer overflow
Faulty MAC address
Poorly encrypted data
Who is credited with developing the concept of packet switching?
Vint Cerf
Leonard Kleinrock
Jon Postel
Steve Crocker
In OSI and TCP/IP, which layer handles routing?
Physical
Application
Network
Transport
The queuing delay is affected most by:
Header size
Queue length and traffic intensity
Packet propagation
Protocol stack depth
