This document contains 39 questions about networking concepts including the internet, OSI model, TCP/IP model, switching methods, circuit switching, packet switching, message switching, layers of the OSI model and their responsibilities, protocols like TCP, UDP, IP, ARP, RARP, and ICMP. It asks to define these terms, compare different approaches like circuit switching vs packet switching, and explain concepts like connection-oriented vs connectionless transmission, segmentation and reassembly, and compression.

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1- What is Internet?
2- Remind four important applications of the Internet?
3- What is the RFC?
4- In Networking, what is the Switch?
5- What are the three methods of Switching?
6- What is Circuit Switching Network?
7- What are the three phases in Circuit Switching Network? With explanation.
8- The circuit-switched networks are not as efficient as the other two types of
networks (Packet Switch & Message Switch). Why?
9- The delay in Circuit Switching Network is minimal! Why?
10-Why Circuit Switches are suitable to be used for Telephone System?
11-What is the main difference between Circuit Switch network and Datagram
Switch Network?
12-When a Packet Switch Network uses for data communication, what is happening
for a message when send from the sender to the receiver?
13-The efficiency of a datagram network is better than that of a circuit-switched
network. Why?
14-There may be greater delay in a Packet Switch network than in a Circuit Switch
network. Why?
15-Clarify, what is the Message Switching Network?
16-What is the OSI Model?
17-How many layers the OSI Model has? Remind Them.
18-What is the Application Layer in the OSI Model?
19-What are the responsibilities of the Presentation Layer in the OSI Model? Clarify
them.
20-One of the responsibilities of the Presentation layer of the OSI Model is
Compression. What does mean Compression and why it is important?
21-Remind four services provided by the Session layer in the OSI Model?
22-What are the responsibilities of the Transport layer of the OSI Model?
23-One of the responsibility of the Transport layer is Segmentation and Reassembly.
What does mean that?
24-The Transport Layer managing the Transmission Speed and Follow Control. What
does mean that?
25-What is the difference between Connection Oriented Transmission and
Connectionless Transmission?
26-What are the features of the Connection Oriented Transmission and
Connectionless Transmission?
27-What are the responsibilities of the Network Layer in the OSI model?

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28-What is the main difference between Transport Layer and Network Layer of the
OSI model?
29-What are the functions of the Data Link Layer in the OSI model? Clarify three of
them.
30-Remind four responsibilities of the Physical layer in the OSI model?
31-What is the TCP/IP model?
32-What are the protocols that are using in the Network Layer in the TCP/IP model?
Which protocol is the most important? Clarified it.
33-What is Internetworking Protocol?
34-What is the difference between the ARP and RARP protocol?
35-What is the ICMP in the TCP/IP model?
36-What is the difference between the IP and the UDP &TCP?
37-Clarify the UDP in the TCP/IP Model?
38-Clarify the TCP in the TCP/IP model?
39-