Application Layer Quiz

What is the primary purpose of the Application Layer?

• Encrypt data packets

• Manage dialog control

• Provide services to end-user applications

• Establish physical connections

Which layer is closest to the end user in the OSI model?

• Transport

• Network

• Application

• Data Link

Which of the following functions is associated with the Presentation Layer?

• IP address allocation

• Dialog control

• Data compression and encryption

• File transfer

The Session Layer is primarily responsible for:

• Formatting data

• Establishing and managing communication sessions

• Sending emails

• Resolving domain names

What port does HTTP use?

• 21

• 25

• 80

• 143

HTTPS adds what to HTTP?

• Compression

• Encryption and authentication

• Domain name resolution

• Multicast support

SMTP operates on which port?

• 110

• 25

• 443

• 53

IMAP is different from POP in that:

• It deletes email after download

• It doesn't store messages on the server

• It maintains emails on the server

• It uses UDP instead of TCP

Which protocol uses both TCP and UDP on port 443?

• HTTP

• IMAP

• HTTPS

• FTP

The protocol that translates domain names into IP addresses is:

• HTTP

• DNS

• SMTP

• DHCP