As a CCNA candidate, you will be expected to know the OSI model very well. Which of the following are associated with the application layer (layer 7) of the OSI model?

A. TCP
B. Telnet
C. FTP
D. Ping
E. IP
F. UDP

Answer: B, C

Explanation:

The application layer is the top layer of the OSI model and is used to describe the end
user applications that can be used over a network.

Layer Name Examples

Application (layer 7) Telnet, HTTP, FTP, WWW browsers, NFS, SMTP gateways,SNMP

Incorrect Answers:

A. TCP resides at layer 4.
D. ARP is a function of the data link layer, which is layer 2.
E. IP is used at layer 3 (network layer).
Reference: CCNA Self-Study CCNA INTRO exam certification Guide (Cisco Press,
ISBN 1-58720-094-5) Page 34.