Chapter 6

What identifier is used at the data link layer to uniquely identify an Ethernet device?

• IP address

• MAC address

• sequence number

• TCP port number

• UDP port number

Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.)

• Institute of Electrical and Electronics Engineers (IEEE)

• Internet Assigned Numbers Authority (IANA)

• International Telecommunication Union (ITU)

• Electronic Industries Alliance (EIA)

• Internet Society (ISOC)

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 type of physical topology can be created by connecting all Ethernet cables to a central device?

• bus

• ring

• star

• mesh

A technician has been asked to develop a physical topology for a network that provides a high level of redundancy. Which physical topology requires that every node be attached to every other node on the network?

• bus

• hierarchical

• mesh

• ring

• star

Which statement describes the half-duplex mode of data transmission?

• Data transmitted over the network can flow in only one direction.

• Data transmitted over the network flows in one direction at a time.

• Data transmitted over the network flows in one direction to many different destinations simultaneously.

• Data transmitted over the network flows in both directions at the same time.

Which is a function of the Logical Link Control (LLC) sublayer?

• to define the media access processes that are performed by the hardware

• to provide data link addressing

• to identify which network layer protocol is being used

• to accept segments and package them into data units called packets

Which data link layer media access control method does Ethernet use with legacy Ethernet hubs?

• CSMA/CD

• determinism

• turn taking

• token passing

What are the two sublayers of the OSI model data link layer? (Choose two.)

• physical

• internet

• transport

• MAC

• LLC

What method is used to manage contention-based access on a wireless network?

• CSMA/CD

• priority ordering

• CSMA/CA

• token passing