Network Fundamentals Quiz

Refer to the graphic. What type of cabling is shown?

• STP

• fiber

• coax

• UTP

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

• provide physical addressing to the devices

• control data access to the media

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

• determine the path packets take through the network

Which two devices commonly affect wireless networks? (Choose two.)

• cordless phones

• microwaves

• external hard drives

• incandescent light bulbs

• Blu-ray players

A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)

• the reliability of the gigabit Ethernet infrastructure of the backbone

• the bandwidth of the WAN connection to the Internet

• the amount of traffic that is currently crossing the network

• the latency that is created by the number of network devices that the data is crossing

• the type of traffic that is crossing the network

What are two characteristics of fiber-optic cable? (Choose two.)

• It is not affected by EMI or RFI.

• It typically contains 4 pairs of fiber-optic wires.

• It is more expensive than UTP cabling is.

• It combines the technique of cancellation, shielding, and twisting to protect data.

• Each pair of cables is wrapped in metallic foil.

Refer to the graphic. What type of cabling is shown?

• UTP

• fiber

• coax

• STP

What is the function of the CRC value that is found in the FCS field of a frame?

• to compute the checksum header for the data field in the frame

• to verify the physical address in the frame

• to verify the logical address in the frame

• to verify the integrity of the received frame

What is contained in the trailer of a data-link frame?

• error detection

• data

• physical address

• logical address

What three items are contained in an Ethernet header and trailer? (Choose three.)

• destination MAC address

• source MAC address

• error-checking information

• source IP address

• destination IP address

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

• It ensures that application data will be transmitted according to the prioritization.

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

• It maintains the path between the source and destination devices during the data transmission.

• 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.