1. What are the Methods to move data through a network of links and switches?
a) Packet switching and Line switching
b) Circuit switching and Line switching
c) Line switching and bit switching
d) Packet switching and Circuit switching
Explanation: Packet switching and Circuit switching are two different types of switching methods used to connect the multiple communicating devices with one another. Packet switching is used in conventional LAN systems and circuit switching is used in telephonic systems.
2. The required resources for communication between end systems are reserved for the duration of the session between end systems in ________ method.
a) Packet switching
b) Circuit switching
c) Line switching
d) Frequency switching
Explanation: In circuit switching, a physical path between the sender and receiver is established. This path is maintained until the connection is needed. Circuit switching is implemented in the Physical layer and is used in telephonic systems.
3. As the resources are reserved between two communicating end systems in circuit switching, ___________ is achieved.
a) authentication
b) guaranteed constant rate
c) reliability
d) store and forward
Explanation: Circuit switching is connection oriented and is always implemented in the physical layer. Once a path is set, all transmission occurs through the same path. It is used since the early times in telephonic systems.
4. In _________ systems, resources are allocated on demand.
a) packet switching
b) circuit switching
c) line switching
d) frequency switching
Explanation: In packet switching, the bits are received in out of order and need to be assembled at the receiver end, whereas in the case of Circuit switching, all the bits are received in order. All transmissions may not occur through the same path in case of packet switching.
5. Which of the following is not an application layer service?
a) Network virtual terminal
b) File transfer, access, and management
c) Mail service
d) Error control
Explanation: Application layer is the topmost layer in the OSI model. Network virtual terminal, mail service, file transfer, access and management are all services of the application layer. It uses protocols like HTTP, FTP, and DNS etc. to provide these services.
6. Which is not a application layer protocol?
a) HTTP
b) SMTP
c) FTP
d) TCP
Explanation: TCP is transport layer protocol.
7. The packet of information at the application layer is called __________
a) Packet
b) Message
c) Segment
d) Frame
Explanation: For Application, Presentation and Session layers there is no data format for message. Message is message as such in these three layers. But when it comes to Transport, Network, Data and Physical layer they have data in format of segments, packets, frames and bits respectively.
8. Which one of the following is an architecture paradigms?
a) Peer to peer
b) Client-server
c) HTTP
d) Both Peer-to-Peer & Client-Server
Explanation: HTTP is a protocol.
9. Application developer has permission to decide the following on transport layer side
a) Transport layer protocol
b) Maximum buffer size
c) Both Transport layer protocol and Maximum buffer size
d) None of the mentioned
Explanation: Application layer provides the interface between applications and the network. So application developer can decide what transport layer to use and what should be its maximum buffer size.
10. Application layer offers _______ service.
a) End to end
b) Process to process
c) Both End to end and Process to process
d) None of the mentioned
Explanation: End to End service is provided in the application layer. Whereas process to process service is provided at the transport layer.
Why Computer Network ?
Packet Switching: Breaking It Down into Bites
You're sending a message across the web. With packet switching, your message is like a jigsaw puzzle. It's sliced into tiny packets, each with its own GPS. These packets zip through the network independently, taking different routes, and magically reassemble at the destination. It's like sending secret agents to deliver your message, ensuring it arrives intact!
This method is like ordering a pizza and having each slice delivered separately, ensuring no slice gets cold in transit. Efficient, right?
Circuit Switching: The Grand Connection Ballroom
Imagine you're making a call. With circuit switching, it's like booking the entire conversation ballroom for yourself. A dedicated line is established between you and your conversation partner. No interruptions, no sharing—just a direct, private line for your chit-chat.
Think of it as reserving a table at your favorite restaurant. It's exclusively yours until you decide to leave. Old school charm, but not the most efficient use of resources in today's fast-paced digital world.
The Verdict: Who Wins the Network Crown?
In the battle of Packet Switching vs. Circuit Switching, Packet Switching emerges as the rockstar. Why? Because it's like hosting a virtual party – everyone gets an invite, and the network stays agile and efficient.