Cisco Exam Questions

Click and drag the Open Systems Interconnection layers…

DRAG DROP
Click and drag the Open Systems Interconnection (OSI) layers to their corresponding functions on the right.
Select and Place:

Answer:

Explanation:
The following are the OSI layers along with their descriptions:

Application: Responsible for interacting directly with the application. It provides application services such as e-mail and File Transfer Protocol (FTP).
Physical: Consists of hardware for sending and receiving data on a carrier. The protocols which work at the Physical layer include Fast Ethernet, RS232, and
Asynchronous Transfer Mode (ATM).
Transport: Responsible for error-free and sequential delivery of data. This layer is used to manage data transmission between devices, a process known as flow
control. The Transport layer protocols are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP).
Network: Used to define the network address or the Internet Protocol (IP) address, which is then used by the routers to make routing decisions.
The following are also OSI layers:
Presentation: Enables coding and conversion functions for application layer data. The formatting and encryption of data is done at this layer. The Presentation
layer converts data into a format which is acceptable by the application layer.
Session: Used to create, manage, and terminate sessions between communicating nodes. The session layer handles the service requests and service
responses, which take place between different applications.
Data Link: Ensures the reliable transmission of data across a network on the basis of Layer 2 addresses such as MAC addresses (Ethernet) or DLCIs (Frame
Relay).
Objective:
Network Fundamentals
Sub-Objective:
Compare and contrast OSI and TCP/IP models

Internetworking Technology Handbook > Internetworking Basics > OSI Model and Communication Between Systems