Which of the following protocols can be found at the application layer?
A.
Telnet
B.
TCP
C.
SNMP
D.
UDP
Which of the following protocols can be found at the application layer?
Which of the following protocols can be found at the application layer?
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Telnet – The Application layer provides network services directly to the user’s application such as a web browser, email software and Windows Explorer. This layer is said to be “closest to the user”.
Protocols that operate on this layer include: TELNET, HTTP, FTP, TFTP, SMTP, NTP, SNMP, EDI.
SNMP (Simple Network Management Protocol) – Port(s) 161, 162, 10161, 10162
SNMP operates in the Application Layer of the Internet Protocol Suite (Layer 7 of the OSI model). The SNMP agent receives requests on UDP port 161. The manager may send requests from any available source port to port 161 in the agent. The agent response will be sent back to the source port on the manager. The manager receives notifications (Traps and InformRequests) on port 162. The agent may generate notifications from any available port. When used with Transport Layer Security or Datagram Transport Layer Security requests are received on port 10161 and traps are sent to port 10162.
Hmmm, 2 correct answers. But only asking for one, and only one marked.