stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
CISCO Flashcards | StudBud
Explore
/
CISCO
CISCO
60 terms
·
StudBud Administration
·
25 plays
Imported from external platform
Flashcards
60 cards
F
Practice quiz
P
Host live
L
Questions
60
Answers
1
What is the auto-MDIX feature?
It enables a device to automatically configure an interface to use a s-t
It enables a device to automatically configure the duplex
It enables a device to automatically configure the speed of its interface.
It enables a switch to dynamically select the forwarding method.
2
What are two examples of the cut-through switching method? (Choose two.)
fragment-free switching
fast-forward switching
QOS switching
CRC switching
3
the store-and-forward method of switching is in use, what part of the Ethernet frame is used to perform an error check?
source MAC address in the header
CRC in the trailer
destination MAC address in the header
protocol type in the header
4
What is the function of the CRC value that is found in the FCS field of a frame?
to verify the physical address in the frame
to compute the checksum header for the data field in the frame
to verify the logical address in the frame
to verify the integrity of the received frame
5
Which two functions are performed at the LLC sublayer of the OSI data link layer? (Choose two.)
Implements a process to delimit fields within a Layer 2 frame.
Places information in theframe that identifies which network layer protocol
Integrates various physical technologies.
Enables IPv4 and IPv6 to utilize the same network interface and media.
6
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
the collision caused by two nodes trying to use the media simultaneously
the use of braided wire to shield the adjacent wire pairs
the reflection of the electrical wave back from the far end of the cable
7
What action will occur if a switch receives a frame with the destination MAC address 01:00:5E:00:00:D9?
The switch shares the MAC address table entry with any connected switches.
The switch does not forward the frame.
The switch forwards it out all ports except the ingress port.
The switch sends the frame to a connected router because the destinationMAC
8
Which statement describes a characteristic of the frame header fields of the data link layer?
They vary depending on protocols.
Ethernet frame header fields contain Layer 3 source and destination addres
They include information on user applications.
They all include the flow control and logical connection fields.
9
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
10
Which method of memory buffering would work best for this task?
shared memory buffering
level 1 cache buffering
fixed configuration buffering
port-based buffering
11
Which statement is true about the CSMA/CD access method that is used in Ethernet?
A jamming signal causes only devices that caused the collision to execute
When a device hears a carrier signal and transmits, a collision cannot
Devices involved in a collision get priority to transmit after the backoff
All network devices must listen before transmitting.
12
What is a characteristic of the LLC sublayer?
It places information in the frame allowing multiple Layer 3
It provides delimitation of data according to the physical signaling
It defines software processes that provide services to the physical layer.
It provides the logical addressing required that identifies the device.
13
What OSI physical layer term describes the physical medium which uses electrical pulses?
fiber-optic cable
goodput
copper cable
air
14
What OSI physical layer term describes the amount of time, including delays,for data to travel from one point to another
goodput
throughput
latency
bandwidth
15
A network administrator is connecting two modern switches using a straight-through cable.
The link between switches will work as full-duplex.
The auto-MDIX feature will configure the interfaces eliminating
The link between the switches will work at the fastest speed
The connection will not be possible unless the administrator changes
16
Which type of UTP cable is used to connect a PC to a switch port?
console
crossover
rollover
straight-through
17
What OSI physical layer term describes the physical medium that uses the propagation of light?
goodput
latency
throughput
fiber-optic cable
18
Which three basic parts are common to all frame types supported by the data link layer? (Choose three.)
data
CRC value
trailer
header
19
Which procedure is used to reduce the effect of crosstalk in copper cables?
designing a cable infrastructure to avoid crosstalk interference
wrapping the bundle of wires with metallic shielding
twisting opposing circuit wire pairs together
requiring proper grounding connections
20
What is contained in the trailer of a data-link frame?
logical address
data
error detection
physical address
21
Which switching method has the lowest level of latency?
fast-forward
cut-through
store-and-forward
fragment-free
22
frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame
fragment-free switching
cut-through switching
fast-forward switching
store-and-forward switching
23
What is the purpose of the FCS field in a frame?
to compute the CRC header for the data field
to verify the logical address of the sending node
to determine if errors occurred in the transmission and reception
to obtain the MAC address of the sending node
24
Which topology provides high availability and connects some, but not all, remote sites?
partial mesh
point-to-point
mesh
hub and spoke
25
What is the purpose of the OSI physical layer?
controlling access to media
exchanging frames between nodes over physical network media
performing error detection on received frames
transmitting bits across the local media
26
What action will occur if a switch receives a frame with the destination MAC address FF:FF:FF:FF:FF:FF?
The switch shares the MAC address table entry with any connected switches.
The switch sends the frame to a connected router because the destinationMAC
The switch forwards it out all ports except the ingress port.
The switch does not forward the frame.
27
What OSI physical layer term describes the capacity at which a medium can carry data?
IEEE
EIA/TIA
air
bandwidth
28
What action will occur if a host receives a frame with a destination MAC address of FF:FF:FF:FF:FF:FF?
The host forwards the frame to all other hosts.
The host forwards the frame to the router.
The host will process the frame.
The host sends the frame to the switch to update the MAC address table.
29
Which two devices commonly affect wireless networks? (Choose two.)
Blu-ray players
cordless phones
microwaves
home theaters
30
Which two functions are performed at the LLC sublayer of the OSI data link layer? (Choose two.)
Controls the NIC responsible for sending and receiving data on the physical
Places information in theframe that identifies which network layer protocol
Adds Layer 2 control information to network protocol data.
Enables IPv4 and IPv6 to utilize the same network interface and media.
31
What is the auto-MDIX feature on a switch?
the ability to turn a switch interface on or off accordingly if an active
the automatic configuration of an interface for 10/100/1000 Mb/s operation
the automatic configuration of an interface for a straight-through
the automatic configuration of full-duplex operation over a single Ethernet
32
Which media communication type does not require media arbitration in the data link layer?
deterministic
controlled access
half-duplex
full-duplex
33
Which statement describes an extended star topology?
End devices are connected together by a bus and each bus connects
All end and intermediate devices are connected in a chain to each other
End devices connect to a central intermediate device
Each end system is connected to its respective neighbor via an intermediate
34
What is a primary role of the Physical layer in transmitting data on the network?
control data access to the media
determine the path packets take through the network
provide physical addressing to the devices
create the signals that represent the bits in each frame on to the media
35
What type of communication rule would best describe CSMA/CD?
flow control
message encoding
message encapsulation
access method
36
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
utilizing the MAC address table to forward frames via the destination MAC
forwarding frames with unknown destination IP addresses to the default gate
using the source MAC addresses of frames to build and maintain a MAC
37
What does the term “attenuation” mean in data communication?
time for a signal to reach its destination
strengthening of a signal by a networking device
loss of signal strength as distance increases
leakage of signals from one cable pair to another
38
Which two functions are performed at the MAC sublayer of the OSI data link layer? (Choose two.)
Adds Layer 2 control information to network protocol data.
Implements a trailer to detect transmission errors.
Enables IPv4 and IPv6 to utilize the same network interface and media
Controls the NIC responsible for sending and receiving data on the physical
39
What are two characteristics of fiber-optic cable? (Choose two.)
It typically contains 4 pairs of fiber-optic wires.
Each pair of cables is wrapped in metallic foil.
It is more expensive than UTP cabling is.
It is not affected by EMI or RFI.
40
What OSI physical layer term describes the measure of usable data transferred over a given period of time?
fiber-optic cable
copper cable
air
goodput
41
Which is a multicast MAC address?
01-00-5E-00-00-03
00-26-0F-4B-00-3E
FF-FF-FF-FF-FF-FF
5C-26-0A-4B-19-3E
42
What OSI physical layer term describes the measure of the transfer of bits across a medium over a given period of time?
goodput
throughput
latency
bandwidth
43
During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?
The process port number is added.
The logical address is added.
The physical address is added.
An IP address is added.
44
In addition to the cable length, what two factors could interfere with the communication carried over UTP cables?
crosstalk
signal modulation technique
electromagnetic interference
bandwidth
45
Why are two strands of fiber used for a single fiber optic connection?
The two strands allow the data to travel for longer distances without degra
They increase the speed at which the data can travel.
They allow for full-duplex connectivity.
They prevent crosstalk from causing interference on the connection.
46
What three items are contained in an Ethernet header and trailer?
destination MAC address
source MAC address
destination IP address
error-checking information
47
Which advantage does the store-and-forward switching method have compared with the cut-through switching method?
frame forwarding using IPv4 Layer 3 and 4 information
frame error checking
faster frame forwarding
collision detecting
48
What is one advantage of using the cut-through switching method instead of the store-and-forward switching method?
provides the flexibility to support any mix of Ethernet speeds
makes a fast forwarding decision based on the source MAC address
has a positive impact on bandwidth by dropping most of the invalid frames
has a lower latency appropriate for high-performance computing application
49
What OSI physical layer term describes the process by which one wave modifies another wave?
modulation
IEEE
air
EIA/TIA
50
Which two functions are performed at the LLC sublayer of the OSI data link layer? (Choose two.)
Adds Layer 2 control information to network protocol data.
Integrates various physical technologies.
Places information inthe frame that identifies which network layer protocol
Controls the NIC responsible for sending and receiving data on the physical
51
Which characteristic describes crosstalk?
the loss of wireless signal over excessive distance from the access point
the weakening of the network signal over long cable lengths
the distortion of the network signal from fluorescent lighting
the distortion of the transmitted messages from signals carried
52
Which two fields or features does Ethernet examine to determine if a received frame
auto-MDIX
minimum frame size
source MAC address
Frame Check Sequence
53
What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)
limited susceptibility to EMI/RFI
greater bandwidth potential
greater distances per cable run
durable connections
54
Which two statements describe the services provided by the data link layer? (Choose two.)
It packages various Layer 3 PDUs into a frame format
It maintains the path between the source
It defines the end-to-end delivery addressing scheme.
It manages the access of frames to the network media.
55
What are three ways that media access control is used in networking?
Ethernet utilizes CSMA/CD.
Networks with controlled access have reduced performance due to data
Media access control provides placement of data frames onto the media.
Data link layer protocols define the rules for access to different media.
56
Which two statements describe features or functions of the logical link control sublayer in Ethernet standards?
Logical link control is specified in the IEEE 802.3 standard.
The data link layer uses LLC to communicate with the upper layers
Logical link control is implemented in software.
The LLC sublayer adds a header and a trailer to the data.
57
What action will occur if a host receives a frame with a destination MAC address it does not recognize?
The host will discard the frame.
The host returns the frame to the switch.
The host replies to the switch with its own IP address.
The host forwards the frame to all other hosts.
58
Which switching method uses the CRC value in a frame?
fragment-free
store-and-forward
fast-forward
cut-through
59
What OSI physical layer term describes the physical medium for microwave transmissions?
air
goodput
throughput
latency
60
What action will occur if a switch receives a frame and does have the source MAC address in the MAC table?
The switch adds it to its MAC address table associated with the port number
The switch sends the frame to a connected router because the destination
The switch forwards the frame to the associated port.
The switch refreshes the timer on that entry.
