Computer Networks Questions & Answers – Application Layer – 1
1. Which is not a application layer
protocol?
a) HTTP
b) SMTP
c) FTP
d) TCP
Answer: d
Explanation: TCP is transport layer protocol.
2. The packet of information at the
application layer is called __________
a) Packet
b) Message
c) Segment
d) Frame
Answer: b
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.
3. 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
Answer: d
Explanation: HTTP is a protocol.
4. 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
Answer: c
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.
5. 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
Answer: a
Explanation: End to End service is provided in the application layer. Whereas
process to process service is provided at the transport layer.
6. E-mail is _________
a) Loss-tolerant application
b) Bandwidth-sensitive application
c) Elastic application
d) None of the mentioned
Answer: c
Explanation: Because it can work with available throughput.
7. Pick the odd one out.
a) File transfer
b) File download
c) E-mail
d) Interactive games
Answer: d
Explanation: File transfer, File download and Email are services provided by
the application layer and there are message and data oriented.
8. Which of the following is an
application layer service?
a) Network virtual terminal
b) File transfer, access, and management
c) Mail service
d) All of the mentioned
Answer: d
Explanation: The services provided by the application layer are network virtual
terminal, file transfer, access and management, mail services, directory
services, various file and data operations.
9. To deliver a message to the
correct application program running on a host, the _______ address must be
consulted.
a) IP
b) MAC
c) Port
d) None of the mentioned
Answer: c
Explanation: IP address lets you know where the network is located. Whereas MAC
address is a unique address for every device. Port address identifies a process
or service you want to carry on.
10. Which is a time-sensitive
service?
a) File transfer
b) File download
c) E-mail
d) Internet telephony
Answer: d
Explanation: Internet telephony is Loss-tolerant other applications are not.
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11. Transport services available to
applications in one or another form _________
a) Reliable data transfer
b) Timing
c) Security
d) All of the mentioned
Answer: d
Explanation: The transport services that are provided to application are
reliable data transfer, security and timing. These are very important for
proper end to end services.
12. Electronic mail uses which
Application layer protocol?
a) SMTP
b) HTTP
c) FTP
d) SIP
Answer: a
Explanation: Email uses various protocols like SMTP, IMAP and POP. The most
prominent one used in application layer is SMTP.
a) HTTP
b) SMTP
c) FTP
d) TCP
Explanation: TCP is transport layer protocol.
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.
a) Peer to peer
b) Client-server
c) HTTP
d) Both Peer-to-Peer & Client-Server
Explanation: HTTP is a protocol.
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.
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.
a) Loss-tolerant application
b) Bandwidth-sensitive application
c) Elastic application
d) None of the mentioned
Explanation: Because it can work with available throughput.
a) File transfer
b) File download
c) E-mail
d) Interactive games
Explanation: File transfer, File download and Email are services provided by the application layer and there are message and data oriented.
a) Network virtual terminal
b) File transfer, access, and management
c) Mail service
d) All of the mentioned
Explanation: The services provided by the application layer are network virtual terminal, file transfer, access and management, mail services, directory services, various file and data operations.
a) IP
b) MAC
c) Port
d) None of the mentioned
Explanation: IP address lets you know where the network is located. Whereas MAC address is a unique address for every device. Port address identifies a process or service you want to carry on.
a) File transfer
b) File download
c) E-mail
d) Internet telephony
Explanation: Internet telephony is Loss-tolerant other applications are not.
a) Reliable data transfer
b) Timing
c) Security
d) All of the mentioned
Explanation: The transport services that are provided to application are reliable data transfer, security and timing. These are very important for proper end to end services.
a) SMTP
b) HTTP
c) FTP
d) SIP
Answer: a
Explanation: Email uses various protocols like SMTP, IMAP and POP. The most prominent one used in application layer is SMTP.
Explanation: Email uses various protocols like SMTP, IMAP and POP. The most prominent one used in application layer is SMTP.
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