JN0-102 · Question #393
What are three Application Layer protocols? (Choose three.)
The correct answer is A. DNS C. HTTP D. FTP. DNS, HTTP, and FTP are all protocols that operate at the Application Layer of the OSI model.
Question
What are three Application Layer protocols? (Choose three.)
Options
- ADNS
- BTCP
- CHTTP
- DFTP
- EATM
How the community answered
(39 responses)- A90% (35)
- B8% (3)
- E3% (1)
Why each option
DNS, HTTP, and FTP are all protocols that operate at the Application Layer of the OSI model.
DNS (Domain Name System) is an Application Layer protocol used for resolving domain names into IP addresses.
TCP (Transmission Control Protocol) is a Transport Layer protocol, providing reliable data transfer.
HTTP (Hypertext Transfer Protocol) is an Application Layer protocol used for distributed, collaborative, hypermedia information systems, primarily for web browsing.
FTP (File Transfer Protocol) is an Application Layer protocol used for transferring files between a client and a server.
ATM (Asynchronous Transfer Mode) is a data link layer (Layer 2) and physical layer (Layer 1) technology, not an Application Layer protocol.
Concept tested: OSI Application Layer protocols
Source: https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml
Topics
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