DCN1A - OSI & TCP/IP MODEL

At which layer of the OSI model would a logical address be added during encapsulation?

• Physical layer

• Data Link Layer

• Network Layer

• Transport Layer

Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media?

• Application

• Transport

• Data Link

• Physical

What are two services performed by the data link layer of the OSI model? (Choose two.)

• It accepts Layer 3 packets and encapsulates them into frames.

• It determines the path to forward packets.

• It monitors the Layer 2 communication by building a MAC address table.

• It provides media access control and performs error detection.

• It encrypts data packets.

What is a function of Layer 4 of the OSI model?

• to apply framing information to the packet, based on the attached media

• to describe the ordered and reliable delivery of data between source and destination

• to specify the packet type to be used by the communications

• to represent data to the user, including encoding and dialog control

What is a role of the Logical Link Control sublayer?

• to mark frames to identify the network layer protocol being carried

• to provide data link layer addressing

• to define the media access processes performed by network hardware

• to provide access to various Layer 1 network technologies

What are proprietary protocols?

• protocols developed by private organizations to operate on any vendor hardware

• protocols developed by organizations who have control over their definition and operation

• a collection of protocols known as the TCP/IP protocol suite

• protocols that can be freely used by any organization or vendor

Which statement is true about the TCP/IP and OSI models?

• The TCP/IP transport layer and OSI Layer 4 provide similar services and functions.

• The first three OSI layers describe general services that are also provided by the TCP/IP internet layer.

• The TCP/IP network access layer has similar functions to the OSI network layer.

• The OSI Layer 7 and the TCP/IP application layer provide identical functions.

What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)

• ARP

• DHCP

• DNS

• NAT

• FTP

Which PDU format is used when bits are received from the network medium by the NIC of a host?

• File

• Frame

• Packet

• Segment

Which protocol is responsible for controlling the size and rate of the HTTP messages exchanged between server and client?

• HTTP

• DHCP

• ARP

• TCP