Question

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

Blu-ray players
home theaters
cordless phones
microwaves
incandescent light bulbs
external hard drives

Question

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

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 provides reliable delivery through link establishment and flow control.
It ensures that application data will be transmitted according to the prioritization.
It packages various Layer 3 PDUs into a frame format that is compatible with the network interface.

Question

What is the auto-MDIX feature on a switch?

the automatic configuration of an interface for 10/100/1000 Mb/s operation
the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection
the automatic configuration of full-duplex operation over a single Ethernet copper or optical cable
the ability to turn a switch interface on or off accordingly if an active connection is detected

Question

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

to verify the integrity of the received frame
to verify the physical address in the frame
to verify the logical address in the frame
to compute the checksum header for the data field in the frame

Question

What is the purpose of the FCS field in a frame?

to obtain the MAC address of the sending node
to verify the logical address of the sending node
to compute the CRC header for the data field
to determine if errors occurred in the transmission and reception

Question

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

logical address
physical address
data
error detection

Question

What is the auto-MDIX feature?

It enables a device to automatically configure an interface to use a straight-through or a crossover cable.
It enables a device to automatically configure the duplex settings of a segment.
It enables a device to automatically configure the speed of its interface.
It enables a switch to dynamically select the forwarding method.

Question

Which statement describes a characteristic of the frame header fields of the data link layer?

They all include the flow control and logical connection fields.
Ethernet frame header fields contain Layer 3 source and destination addresses.
They vary depending on protocols.
They include information on user applications.

Question

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?

mesh
partial mesh
hub and spoke
point-to-point

Question

Refer to the exhibit. What is the destination MAC address of the Ethernet frame as it leaves the web server if the final destination is PC1?

00-60-2F-3A-07-AA
00-60-2F-3A-07-BB
00-60-2F-3A-07-CC
00-60-2F-3A-07-DD

Question

Which is a multicast MAC address?

FF-FF-FF-FF-FF-FF
5C-26-0A-4B-19-3E
01-00-5E-00-00-03
00-26-0F-4B-00-3E

Question

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.
If both switches support different speeds, they will each work at their own fastest speed.
The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable.
The connection will not be possible unless the administrator changes the cable to a crossover cable.
The duplex capability has to be manually configured because it cannot be negotiated.

Question

Which two fields or features does Ethernet examine to determine if a received frame is passed to the data link layer or discarded by the NIC? (Choose two.)

auto-MDIX
CEF
Frame Check Sequence
minimum frame size
source MAC address

Question

A Layer 2 switch is used to switch incoming frames from a 1000BASE-T port to a port connected to a 100Base-T network. Which method of memory buffering would work best for this task?

port-based buffering
level 1 cache buffering
shared memory buffering
fixed configuration buffering

Question

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

has a positive impact on bandwidth by dropping most of the invalid frames
makes a fast forwarding decision based on the source MAC address of the frame
has a lower latency appropriate for high-performance computing applications
provides the flexibility to support any mix of Ethernet speeds

Question

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

store-and-forward switching
fast-forward switching
CRC switching
fragment-free switching
QOS switching

Question

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

cut-through switching
store-and-forward switching
fragment-free switching
fast-forward switching

Question

Which switching method has the lowest level of latency?

cut-through
store-and-forward
fragment-free
fast-forward

Question

Which media communication type does not require media arbitration in the data link layer?

deterministic
half-duplex
full-duplex
controlled access

Question

Which statement describes an extended star topology?

End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.
End devices are connected together by a bus and each bus connects to a central intermediate device.
Each end system is connected to its respective neighbor via an intermediate device.
All end and intermediate devices are connected in a chain to each other.

Question

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 sophistication of the encapsulation method applied to the data
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
the bandwidth of the WAN connection to the Internet
the reliability of the gigabit Ethernet infrastructure of the backbone

Question

What is a characteristic of the LLC sublayer?

It provides the logical addressing required that identifies the device.
It provides delimitation of data according to the physical signaling requirements of the medium.
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
It defines software processes that provide services to the physical layer.

Question

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

access method
flow control
message encapsulation
message encoding

Question

In addition to the cable length, what two factors could interfere with the communication carried over UTP cables? (Choose two.)

crosstalk
bandwidth
size of the network
signal modulation technique
electromagnetic interference

Question

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

collision detecting
frame error checking
faster frame forwarding
frame forwarding using IPv4 Layer 3 and 4 information

Question

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.
Contention-based access is also known as deterministic.
802.11 utilizes CSMA/CD.
Data link layer protocols define the rules for access to different media.
Networks with controlled access have reduced performance due to data collisions.

Question

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

An IP address is added.
The logical address is added.
The physical address is added.
The process port number is added.

Question

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

source IP address
source MAC address
destination IP address
destination MAC address
error-checking information

Question

The graphic displays a terminated RJ45 connector. The untwisted wires at the end of the PVC sheath are crimped by the connector.

Refer to the exhibit. What is wrong with the displayed termination?

The woven copper braid should not have been removed.
The wrong type of connector is being used.
The untwisted length of each wire is too long.
The wires are too thick for the connector that is used.

Question

PC on the left connects to a switch. This connection is labeled 1. The switch connects to a router. This connection is labeled 2. The router connects to another router. This link is labeled 3.

Refer to the exhibit. The PC is connected to the console port of the switch. All the other connections are made through FastEthernet links. Which types of UTP cables can be used to connect the devices?

1 - rollover, 2 - crossover, 3 - straight-through
1 - rollover, 2 - straight-through, 3 - crossover
1 - crossover, 2 - straight-through, 3 - rollover
1 - crossover, 2 - rollover, 3 - straight-through

Question

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

It is not affected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding, and twisting to protect data.
It typically contains 4 pairs of fiber-optic wires.
It is more expensive than UTP cabling is.

Question

When the store-and-forward method of switching is in use, what part of the Ethernet frame is used to perform an error check?

CRC in the trailer
source MAC address in the header
destination MAC address in the header
protocol type in the header

Question

Which switching method uses the CRC value in a frame?

cut-through
fast-forward
fragment-free
store-and-forward

Question

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

building a routing table that is based on the first IP address in the frame header
using the source MAC addresses of frames to build and maintain a MAC address table
forwarding frames with unknown destination IP addresses to the default gateway
utilizing the MAC address table to forward frames via the destination MAC address
examining the destination MAC address to add new entries to the MAC address table

Question

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.
Logical link control is specified in the IEEE 802.3 standard.
The LLC sublayer adds a header and a trailer to the data.
The data link layer uses LLC to communicate with the upper layers of the protocol suite.
The LLC sublayer is responsible for the placement and retrieval of frames on and off the media.

Question

PT Activity

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

Which port does Switch0 use to send frames to the host with the IPv4 address 10.1.1.5?

Fa0/1
Fa0/5
Fa0/9
Fa0/11

Question

What OSI physical layer term describes the process by which one wave modifies another wave?

modulation
IEEE
EIA/TIA
air

Question

What OSI physical layer term describes the capacity at which a medium can carry data?

bandwidth
IEEE
EIA/TIA
air

Question

What OSI physical layer term describes the capacity at which a medium can carry data?

bandwidth
throughput
latency
goodput

Question

What OSI physical layer term describes the measure of the transfer of bits across a medium over a given period of time?

throughput
bandwidth
latency
goodput

Question

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

latency
bandwidth
throughput
goodput

Question

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

latency
fiber-optic cable
air
copper cable

Question

What OSI physical layer term describes the measure of usable data transferred over a given period of time?

goodput
fiber-optic cable
air
copper cable

Question

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

copper cable
fiber-optic cable
air
goodput

Question

What OSI physical layer term describes the physical medium that uses the propagation of light?

fiber-optic cable
goodput
latency
throughput

Question

What OSI physical layer term describes the physical medium for microwave transmissions?

air
goodput
latency
throughput

Question