1.3 OSI Model

Which of the following functions are performed by the OSI Transport layer? (Select three.)

• Reliable message delivery

• Data segmentation and reassembly

• End-to-end flow control

• Format packets for delivery through the media

• Control media access, logical topology, and device identification

What is the basic purpose of the OSI Physical layer?

• Coordinates rules for routing packets

• Coordinates rules for managing network servers

• Coordinates rules for transmitting bits.

• Defines basic physical structures, such as disks.

Which of the following are included as part of Data Link layer specifications? (Select two.)

• Mapping hardware addresses to link-layer addresses

• Defining a unique hardware address for each device on the network

• Creating routing tables based on MAC addresses

• Letting devices on the network have access to the LAN

Which OSI model layer is responsible for guaranteeing reliable message delivery?

• Session

• Data Link

• Transport

• Application

In the OSI model, what is the primary function of the Network layer?

• Allows applications to establish, use, and end a connection

• Transmits data frames

• Ensures that packets are delivered with no loss or duplication

• Routes messages between networks

Which of the following tasks is associated with the Session layer?

• Transmission synchronization

• Host ID number assignment

• Connection establishment

• Acknowledgement coordination

In the OSI model, which of the following functions are performed at the Presentation layer? (Select two.)

• Specify data format (such as file formats)

• Handle general network access, flow control, and error recovery

• Encrypt and compress data

• Provide network services

• Transmit data frames

Which of the following functions are performed at the Physical layer of the OSI model?

• Provisioning environments where you can run network applications

• Data translation

• Conversation identification

• Moving data across network cables

• Enabling network services