NetAcad Modules 4-7 Exam

Which is a multicast MAC address?

01-00-5E-00-00-03

What type of communication rule would best describe CSMA/CD?

Access method

Which statement is true about the CSMA/CD access method that is used in Ethernet?

All network devices must listen before transmitting.

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

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

Which statement describes an extended star topology?

End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.

What are three ways that media access control is used in networking? (Choose three.)

Ethernet utilizes CSMA/CD. Media access control provides placement of data frames onto the media. Data link layer protocols define the rules for access to different media.

What are two examples of the cut-through switching method? (Choose two.)

Fragment-free switching fast-forward switching

Which three basic parts are common to all frame types supported by the data link layer? (Choose three.)

Header data Trailer

What is the auto-MDIX feature?

It enables a device to automatically configure an interface to use a straight-through or a crossover cable.

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

It is more expensive than UTP cabling is. It is not affected by EMI or RFI.

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.

Which two statements describe features or functions of the logical link control sublayer in Ethernet standards? (Choose two.)

Logical link control is implemented in software The data link layer uses LLC to communicate with the upper layers of the protocol suite

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

Which switching method uses the CRC value in a frame?

Store-and-forward

Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?

Store-and-forward switching

A network administrator is connecting two modern switches using a straight-through cable. The switches are new and have never been configured. Which three statements are correct about the final result of the connection? (Choose three.)

The link between the switches will work at the fastest speed that is supported by both switches. The link between switches will work as full-duplex. The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable.

What does the term "attenuation" mean in data communication?

The loss of signal strength as distance increases

What action will occur if a switch receives a frame with the destination MAC address FF:FF:FF:FF:FF:FF?

The switch forwards it out all ports except the ingress port.

Fiber Optic

backbone cabling in an enterprise long-haul networks

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

copper cable

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

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

Which advantage does the store-and-forward switching method have compared with the cut-through switching method?

frame error checking

Wireless

guest access in a coffee shop waiting rooms in a hospital

What is one advantage of using the cut-through switching method instead of the store-and-forward switching method?

has a lower latency appropriate for high-performance computing applications​

Copper Cables

horizontal cabling structure desktop PCs in an enterprise office

What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)

limited susceptibility to EMI/RFI greater distances per cable run greater bandwidth potential

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

source MAC address destination MAC address error-checking information

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 amount of traffic that is currently crossing the network the type of traffic that is crossing the network the latency that is created by the number of network devices that the data is crossing

What is the auto-MDIX feature on a switch?

the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection

With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?

the magnetic field around the adjacent pairs of wire

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

utilizing the MAC address table to forward frames via the destination MAC address using the source MAC addresses of frames to build and maintain a MAC address table