Which Two Definitions Accurately Describe The Associated Application Layer Protocol? (Choose Two.)

Which two definitions accurately describe the associated application layer protocol? (Choose two.)

• SMTP- It can transfer web pages from web servers to clients.
• Telnet- It gives remote access to the servers and the networking devices.
• DNS- solve the internet names with IP addresses.
• FTP- It transports the email messages.
• HTTP- It gives the IP addresses to the networking devices.

Answer: 

The definition which accurately describes the associated application layer protocol is Telnet which gives remote access to the servers and the networking devices. While the DNS solves the internet name to IP addresses.

 Along with the answer, now let us describe different applications layer and their commands in this topic. That’s why stay connected to the end of the discussion.

 Application layer of the OSI Model

The application layer is the upper layer of the OSI model, along with the help of this layer people or users will interact with the PC. It gives various services to its users.IT contains the communication protocol which manages the transmission over the network. The protocol describes the process of the client and servers on the end system. Protocols of Application layer narrates:

• The message types either it is request or response messages.
• The syntax or structure of messages such as the message field and how they are depicted.
• Semitics or meaning of the message, the information which is the message shows.
• The rules for the message transferal are also outlined by protocol.

Protocol of Applications Layer:

Some of the application layers protocols are defined in the following section:

TELNET:

Teletype Network assists in terminal emulation. The Telnet clients can easily access the resources of the Telnet server. It can manage the files on the network. The devices like the switch’s initial setup are maintained by it. with the command of it, it can communicate with remote devices. The port number for the telnet is 23.

Command:

telnet [\Remote server]

TFTP:

TFTP stands for the trivial file transfer protocol, it is also called the stripped-down version of FTP but the modification is that you can easily find what you want to know. The technology which transfers the file among network devices and the simple FTP, the port number is 69.

Command 

tftp [ options…] [host [port]] [-c command] 

NFS (Network File System):

Network file systems initiate the file system over the internet and then interact with those files because they are mounted locally. It allows the system administrator to integrate the sources on the centralized server over the network. The port number is 2049 for NFS.

Command 

service nfs start