01
Written response
1 point
What is the networking term for an agreed set of rules that defines how devices exchange information?
Free Practice Quiz Question List
1 Network Models and Protocol Foundations Online Quiz Questions
Use this free practice quiz with 20 questions to review 1 Network Models and Protocol Foundations, test your knowledge, and prepare for your next test or exam.
20 questions
02
Choose one
1 point
A network design needs to identify the layer responsible for communication between processes on end devices. Which responsibility should it assign to the transport layer?
- A
Forwarding packets between networks
- B
Communication between processes on end devices
- C
Signaling over a physical medium
- D
Delivery across a directly connected link
03
Fill in the blank
1 point
As data moves down the layers of a sending device, each layer may add control information to form its own data unit. This process is called .
04
True or false
1 point
True or false: A network model is itself a protocol that devices follow to exchange messages.
- A
True
- B
False
05
Written response
1 point
A TCP protocol analyzer labels the data unit handled at the transport layer. What is that unit commonly called?
06
Choose one
1 point
A receiving device has accepted a message on its network link. Which sequence best describes the upward order in which the layers process it?
- A
Application, transport, internet, then link
- B
Internet, link, application, then transport
- C
Link, internet, transport, then application
- D
Transport, application, link, then internet
07
Fill in the blank
1 point
When preparing a packet for forwarding across networks, IP adds source and destination network .
08
True or false
1 point
True or false: Every real protocol fits neatly into exactly one corresponding layer in both the OSI and Internet models.
- A
True
- B
False
09
Choose all
1 point
Which properties does IP not guarantee? Select all correct answers.
- A
Packets will arrive at their destination
- B
Packets will be delivered in order
- C
Packets will be delivered no more than once
- D
Each packet includes source and destination network addresses
10
Choose all
1 point
A team confirms that the local link works and IP addressing and forwarding function correctly, but a website request still fails. Which checks are relevant next in a layered troubleshooting approach? Select all that apply.
- A
Replace the local link before checking anything else
- B
Check whether transport communication is established or receiving data
- C
Recheck IP forwarding as the only relevant step
- D
Check whether the application protocol is behaving as expected
11
Choose one
1 point
A student says that a network model and a protocol are interchangeable terms. Which explanation best corrects this misunderstanding?
- A
A model defines message rules, while a protocol groups related functions
- B
A model and a protocol are two names for the same thing
- C
A model organizes communication functions, while a protocol defines exchange rules
- D
A model forwards packets, while a protocol signals over a physical medium
12
Open ended
1 point
A browser sends a request to a website. Explain how the application protocol, transport protocol, IP, and link protocol each contribute to delivering the request, and why no one of them provides the entire application service by itself.
13
Choose one
1 point
A router receives an IP packet and must send it across the next link. Which action best describes its typical forwarding behavior?
- A
It forwards the application request without processing any network-layer information
- B
It examines the IP packet to choose where to forward it, then sends it in a new link-layer frame
- C
It changes the IP packet into an application-layer message at each link
- D
It forwards the same link-layer frame unchanged across every link
14
True or false
1 point
True or false: A network implementation may combine functions from different layers or allow interaction across layer boundaries.
- A
True
- B
False
15
Choose one
1 point
A team is using the OSI model to organize a network design. How many functional layers does this model define?
- A
4
- B
7
- C
5
- D
6
16
Choose one
1 point
When comparing the OSI model with the common four-layer Internet model, which Internet layer groups functions corresponding approximately to OSI layers 5, 6, and 7?
- A
Transport
- B
Link
- C
Application
- D
Internet
17
Choose one
1 point
A packet must travel across multiple networks to reach its destination. Which layer responsibility is most directly involved in addressing and forwarding it along that route?
- A
The Internet layer adds network addresses for forwarding packets between networks.
- B
The Link layer delivers data between application processes on end devices.
- C
The Transport layer signals bits over a physical medium.
- D
The Application layer selects the next local link for a packet.
18
Choose one
1 point
A device switches from Wi-Fi to Ethernet, but its applications continue using the same transport service. Which design principle best explains why the applications need not be redesigned?
- A
An application must implement the signaling rules of every link it uses.
- B
Changing from Wi-Fi to Ethernet requires redesigning every application.
- C
Transport protocols need to manage the physical properties of each network link.
- D
An application can use a transport service without managing the details of Wi-Fi or Ethernet.
19
Written response
1 point
In the OSI model, what layer number is responsible for addressing and forwarding packets between networks?
20
Written response
1 point
As data arrives at a device, corresponding layers interpret and remove the control information added during transmission, working in reverse order. What is this process called?