topic 11 Flashcards
What is the main function of the TCP/IP Application Layer?
Provides the interface between the applications and the underlying network.
List the functions of the presentation layer.
- Formatting
- Compressing
- Encrypting
What is the role of the session layer?
Creates and maintains dialogs/sessions between source and destination applications.
Name five widely known application layer protocols.
- HTTP
- FTP
- TFTP
- IMAP
- DNS
What is the correct sequence of steps for the HTTP process to open a web page in a browser?
A. 1, 3, 2, 5, 4
What is the difference between HTTP and HTTPS?
HTTPS is a secure protocol and HTTP is not.
Which three protocols does email rely on?
C. SMTP, POP, IMAP
What is the correct sequence for the DNS process?
D. 2, 4, 1, 5, 3
What are the steps of DHCP operation (DORA)?
- Client broadcasts a discover message to identify available DHCP servers.
- Server replies with an offer message.
- Client sends a request message to server.
- Server returns an acknowledgement message.
Fill in the blank: SMTP stands for _______.
Simple Mail Transfer Protocol
What happens when the server receives a message via SMTP?
It either places the message in a local account or forwards it to another mail server for delivery.
Fill in the blank: POP stands for _______.
Post Office Protocol
What is the main function of POP?
Used to retrieve mail from a mail server, after which the messages are deleted on the server.
Fill in the blank: IMAP stands for _______.
Internet Message Access Protocol
What is the main feature of IMAP?
Original messages are kept on the server until manually deleted.
Fill in the blank: DHCP stands for _______.
Dynamic Host Configuration Protocol
What does DHCP automate?
The assignment of IPv4 addresses, subnet masks, gateways, and other IPv4 networking parameters.
What is the purpose of FTP?
Allows for data transfers between a client and a server.
What are the steps for establishing an FTP connection?
- Client establishes the first connection for control traffic.
- Client establishes the second connection for data transfer.
- Data transfer can happen in either direction.
