01
True or false
1 point
True or false: A network link can use copper, fiber-optic cable, or radio to carry signals between network devices.
Free Practice Quiz Question List
Computing and Internet Infrastructure Online Quiz Questions
Use this free practice quiz with 20 questions to review Computing and Internet Infrastructure, test your knowledge, and prepare for your next test or exam.
20 questions
02
True or false
1 point
True or false: A switch normally connects different networks by selecting the next hop for an IP packet.
- A
True
- B
False
03
Choose one
1 point
Which statement best describes the usual role of a network switch?
- A
It connects different networks and selects an IP next hop.
- B
It usually connects devices within one local network and forwards frames using local addresses.
- C
It provides reliable, ordered delivery between application processes.
- D
It converts every physical signal directly into application data.
04
Fill in the blank
1 point
Complete the encapsulation sequence: Application data is placed into a , which is then placed into an .
05
Choose one
1 point
Why does packet switching allow network links to be shared efficiently?
- A
It reserves one continuous physical circuit for each conversation.
- B
It guarantees that packets arrive in order without loss.
- C
It divides messages into packets so traffic from many users can share links.
- D
It requires every packet to follow the same geographically shortest path.
06
Choose all
1 point
Which three statements describe capabilities provided by TCP? Select all correct choices.
- A
It supports reliable delivery using acknowledgments and retransmission.
- B
It guarantees that congestion can never delay an application.
- C
It provides an ordered byte stream.
- D
It uses flow control and congestion control.
- E
It is a lightweight datagram service with no built-in retransmission.
07
Fill in the blank
1 point
Complete the descriptions of cloud service models: virtual machines, networks, and storage are examples of , while complete applications delivered over a network are examples of .
08
Choose all
1 point
Which three designs provide meaningful redundancy against at least one shared-component failure? Select all correct choices.
- A
Using duplicate power supplies connected through independent paths
- B
Placing replicas in separate failure domains
- C
Keeping two copies on the same physical disk
- D
Using multiple servers behind a load balancer
- E
Connecting redundant servers to the same single power circuit
09
Choose one
1 point
Which scenario most clearly illustrates a distributed system rather than only parallel execution within one computer?
- A
Running four arithmetic instructions simultaneously on four cores in one processor
- B
Applying the same filter independently to four portions of an in-memory array
- C
Using a graphics accelerator to render four image regions in parallel
- D
Coordinating several networked computers that may fail or communicate with delays
10
Open ended
1 point
Explain the difference between routing and forwarding. Include what each process does and how they relate when a router handles an individual packet.
11
Choose one
1 point
Which component is a device that sends or receives application data and runs applications?
- A
An end system or host
- B
A link
- C
A router
- D
A data-center cooling system
12
True or false
1 point
True or false: In a layered network design, each layer must be implemented by a separate physical device.
- A
True
- B
False
13
Choose one
1 point
A laptop needs to send an IP packet from its home network toward a server on another network. Which statement best distinguishes the roles of the local switch and the router?
- A
A switch connects local devices, while a router connects different networks.
- B
A router only transmits physical signals, while a switch assigns domain names.
- C
A switch selects inter-domain routes, while a router only connects devices in one local network.
- D
A switch guarantees reliable delivery, while a router guarantees ordered delivery.
14
Written response
1 point
What is the name of the principal inter-domain routing protocol that exchanges network-reachability information between independently administered networks?
15
Choose one
1 point
Why does packet switching allow a network link to serve many users efficiently, even though it can introduce delay or packet loss?
- A
It reserves one continuous physical circuit for each conversation.
- B
It prevents packets from being delayed or lost.
- C
It lets packets from many users share network links.
- D
It requires every packet to follow the same physical link.
16
Written response
1 point
A service runs for 95 hours and is unavailable for 5 hours during an observation period. Using the availability formula, what is its availability as a percentage-point value?
17
Choose one
1 point
An application must receive every byte of a file correctly and in order. Which transport protocol best fits this requirement?
- A
TCP
- B
UDP
- C
IP
- D
DNS
18
Choose one
1 point
A cloud provider places several customer virtual machines on one physical server while keeping their operating environments isolated. Which technology directly enables this arrangement?
- A
Packet switching
- B
BGP route exchange
- C
Virtualization
- D
Data parallelism
19
Written response
1 point
An online game needs low-latency messages and implements its own recovery logic for messages that matter. Which transport protocol best fits this design? Enter the protocol name.
20
Written response
1 point
In a MapReduce job, one group of workers independently processes input records, and a later phase combines the results associated with the same keys. What is the name of the combining phase? Enter the phase name in lowercase.