Application Layer Quiz

What transport service does an app need?

• data integrity

• timing

• throughput

• security

What are the common transport service requirements for applications?

• no loss

• loss-tolerant

• elastic

• time sensitive

What is the purpose of SSL in securing TCP?

• provides encrypted TCP connection

• data integrity

• end-point authentication

• all of the above

What is the role of a client in a client-server architecture?

• always-on host

• permanent IP address

• communicate with server

• do not communicate directly with each other

What is the difference between TCP and UDP?

• TCP is connection-oriented, UDP is not

• TCP provides reliability, UDP does not

• TCP has flow control, UDP does not

• All of the above

What is the identifier required for a process to receive messages?

• IP address

• port number

• both IP address and port number

• none of the above

What are the types of messages exchanged in an application-layer protocol?

• request

• response

• both request and response

• none of the above

What is the main goal of the application layer?

• to provide reliable transport

• to define application protocols

• to create network applications

• to manage data link protocols

What is the purpose of the HTTP protocol?

• To transfer hypertext

• To send emails

• To manage DNS

• To establish FTP connections

What does a web page consist of?

• HTML file and referenced objects

• Only HTML file

• Only images

• Only audio files