32 Questions
Which layer will be discussed in the lecture?
Application Layer
Which of the following is an example of a program run on the application layer?
What is the protocol used for file transfer at the application layer?
FTP
Which of the following is not an example of an application layer program?
Switches
What are the two application models mentioned in the text?
Client-Server and Peer-to-Peer
What type of protocol is HTTP at the application layer?
Hypertext Transfer Protocol
What is a characteristic of the client in a Client-Server network model?
It may be intermittently connected
What does the server do in the Client-Server network model?
It stores and responds to data requested by clients
In Peer-to-Peer (P2P) network model, what does each node function as?
Client and server
What is a characteristic of Peer-to-Peer (P2P) network model in comparison to Client-Server model?
Each peer has its own centralized data storage
How do processes within the same host communicate in the Peer-to-Peer (P2P) model?
By directly communicating with each other
What differentiates the clients and servers in the Client-Server network model?
They are not differentiated
What is a characteristic of clients in the Peer-to-Peer (P2P) model?
They can provide service in return to other peers
What is a characteristic of Peer-to-Peer (P2P) networks in comparison to Client-Server networks?
New peers do not bring new service capacity in P2P networks
What characterizes the communication of two processes within the same host in the Peer-to-Peer (P2P) model?
Direct communication without going through a separate server
What do applications with P2P architectures have in the Peer-to-Peer model?
Both client processes & server processes
What is the responsibility of the data link layer in a computer network?
Transferring datagram from one node to physically adjacent node over a link
Which hardware is an example of the implementation of the data link layer?
Ethernet card
What does the data-link layer do with the packets from the network layer?
Encapsulates them into frames and sends each frame bit-by-bit on the hardware
What is the main function of the framing process in the data link layer?
To encapsulate packets from the network layer into frames
In a computer network, what role does the data link layer play at each network node?
Transferring datagram from one node to physically adjacent node over a link
What represents an example of datagram transferred by different link protocols over different links?
Ethernet on one link, 802.11 on another link
What is the responsibility of the Logical Link Control (LLC) sublayer of the data link layer?
Dealing with framing, flow of data, and error detection/correction
Which type of error means that two or more bits in the data unit have changed from 0 to 1 or vice-versa?
Burst error
What is the primary purpose of using a redundant bit in the simple parity check mechanism for error detection?
To ensure the overall number of bits is even
What does the Media Access Control (MAC) sublayer of the data link layer primarily handle?
Handling hardware addressing and media access control
What is a characteristic of burst errors in data units?
Two or more bits in the data unit have changed from 0 to 1 or vice-versa
What differentiates the Two-dimensions Parity Check from the simple parity check mechanism?
It calculates parity check bits for each row and column, aiding in improved performance and error correction
Which mechanism is considered the most common and least expensive for error detection in data units?
Simple Parity Checking or One-dimension Parity Check
What is primarily responsible for controlling physical media access in the data link layer?
Handling hardware addressing and media access control
What is the primary purpose of using Cyclic Redundancy Check (CRC) as an error detection mechanism?
To detect errors caused by signal attenuation and noise
What is a potential benefit of using Two-dimensions Parity Check over simple parity check for error detection?
It organizes the block of bits in a table for improved performance
Test your knowledge on application models, process communication, messaging properties, applications requirements, transport layer protocols, and application layer security in computer networking. This quiz is based on material covered in Lecture 4 by Dr. Dina Fawzy and the book 'Computer Networking: A Top Down Approach' by Jim Kurose and Keith Ross, 6th edition.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
