What is a primary role of the Physical layer in transmitting data on the network?

• provide physical addressing to the devices

• create the signals that represent the bits in each frame on to the media

• determine the path packets take through the network

Which two statements describe the services provided by the data link layer? (Choose two.)

• It manages the access of frames to the network media.

• It packages various Layer 3 PDUs into a frame format that is compatible with the network interface.

• It defines the end-to-end delivery addressing scheme.

• It provides reliable delivery through link establishment and flow control.

A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites?

• partial mesh

• mesh

• hub and spoke

• point-to-point

During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?

• The physical address is added.

• An IP address is added.

• The logical address is added.

• The process port number is added.

Which switching method has the lowest level of latency?

• cut-through

• fast-forward

• store-and-forward

• fragment-free

What are two actions performed by a Cisco switch? (Choose two.)

• using the source MAC addresses of frames to build and maintain a MAC address table

• utilizing the MAC address table to forward frames via the destination MAC address

• building a routing table that is based on the first IP address in the frame header

• forwarding frames with unknown destination IP addresses to the default gateway

Which type of UTP cable is used to connect a PC to a switch port?

• straight-through

• console

• rollover

• crossover

What action will occur if a host receives a frame with a destination MAC address of FF:FF:FF:FF:FF:FF?

• The host returns the frame to the switch.

• The host will process the frame.

• The host replies to the switch with its own IP address.

• The host forwards the frame to all other hosts.

What OSI physical layer term describes the physical medium which uses electrical pulses?

• copper cable

• fiber-optic cable

• goodput

What OSI physical layer term describes the amount of time, including delays, for data to travel from one point to another?

• latency

• bandwidth

• throughput