CCNA - ITN - 6.4.2

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

• TCP port number

• sequence number

• UDP port number

• IP address

• MAC address

What attribute of a NIC would place it at the data link layer of the OSI model?

• TCP/IP protocol stack

• attached Ethernet cable

• RJ-45 port

• MAC address

• IP address

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

• International Telecommunication Union (ITU)

• Institute of Electrical and Electronics Engineers (IEEE)

• Internet Society (ISOC)

• Internet Assigned Numbers Authority (IANA)

• Electronic Industries Alliance (EIA)

What is true concerning physical and logical topologies?

• Logical topologies refer to how a network transfers data between devices

• Physical topologies are concerned with how a network transfers frames

• The logical topology is always the same as the physical topology

• Physical topologies display the IP addressing scheme of each network

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

• priority ordering

• CSMA/CD

• CSMA/CA

• token passing

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 is attached to every other node on the network?

• star

• ring

• bus

• mesh

• hierarchical

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

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

• Data that is transmitted over the network can only flows in one direction

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

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

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

• to identify which network layer protocol is being used

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

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

• to provide data link layer addressing

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

• determinism

• CSMA/CD

• turn taking

• token passing

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

• transport

• physical

• internet

• MAC

• LLC