Quiz
CCNA5 Chapter 4 Exam Practice
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Fragen in diesem Quiz (22)
1What are two reasons for the physical layer protocols to use frame encoding techniques? (Choose two.)
- Ato reduce the number of collisions on the media
- Bto distinguish data bits from control bits
- Cto provide better media error correction
- Dto identify where the frame starts and ends
- Eto increase the media throughput
2What is indicated by the term throughput?
- Athe guaranteed data transfer rate offered by an ISP
- Bthe capacity of a particular medium to carry data
- Cthe measure of the usable data transferred across the media
- Dthe measure of the bits transferred across the media over a given period of time
- Ethe time it takes for a message to get from sender to receiver
3A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted signals. The new cabling was installed in the ceiling close to fluorescent lights and electrical equipment. Which two factors may interfere with the copper cabling and result in signal distortion and data corruption? (Choose two.)
- AEMI
- Bcrosstalk
- CRFI
- Dsignal attenuation
- Eextended length of cabling
4What characteristic describes crosstalk?
- Athe distortion of the network signal from fluorescent lighting
- Bthe distortion of the transmitted messages from signals carried in adjacent wires
- Cthe weakening of the network signal over long cable lengths
- Dthe loss of wireless signal over excessive distance from the access point
5What technique is used with UTP cable to help protect against signal interference from crosstalk?
- Atwisting the wires together into pairs
- Bwrapping a foil shield around the wire pairs
- Cencasing the cables within a flexible plastic sheath
- Dterminating the cable with special grounded connectors
6Refer 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?
- A1 – rollover, 2 – crossover, 3 – straight-through
- B1 – rollover, 2 – straight-through, 3 – crossover
- C1 – crossover, 2 – straight-through, 3 – rollover
- D1 – crossover, 2 – rollover, 3 – straight-through
7Refer to the exhibit. What is wrong with the display termination?
- AThe woven copper braid should not have been removed.
- BThe wrong type of connector is being used.
- CThe untwisted length of each wire is too long.
- DThe wires are too thick for the connector that is used.
8Which type of connector does a network interface card use?
- ADIN
- BPS-2
- CRJ-11
- DRJ-45
9What is one advantage of using fiber optic cabling rather than copper cabling?
- AIt is usually cheaper than copper cabling.
- BIt is able to be installed around sharp bends.
- CIt is easier to terminate and install than copper cabling.
- DIt is able to carry signals much farther than copper cabling.
10Why are two strands of fiber used for a single fiber optic connection?
- AThe two strands allow the data to travel for longer distances without degrading.
- BThey prevent crosstalk from causing interference on the connection.
- CThey increase the speed at which the data can travel.
- DThey allow for full-duplex connectivity.
11A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)
- Amobility options
- Bsecurity
- Cinterference
- Dcoverage area
- Eextensive cabling
- Fpacket collision
12Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media?
- Aapplication
- Btransport
- Cdata link
- Dphysical
13What are two services performed by the data link layer of the OSI model? (Choose two.)
- AIt encrypts data packets.
- BIt determines the path to forward packets.
- CIt accepts Layer 3 packets and encapsulates them into frames.
- DIt provides media access control and performs error detection.
- EIt monitors the Layer 2 communication by building a MAC address table.
14What is true concerning physical and logical toplogies?
- AThe logical topology is always the same as the physical topology.
- BPhysical topologies are concerned with how a network transfers frames.
- CPhysical topologies display the IP addressing scheme of each network.
- DLogical topologies refer to how a network transfers data between devices.
15Which method of data transfer allows information to be sent and received at the same time?
- Afull duplex
- Bhalf duplex
- Cmultiplex
- Dsimplex
16Which statement describes an extended star topology?
- AEnd devices connect to a central intermediate device, which in turn connects to other central intermediate devices.
- BEnd devices are connected together by a bus and each bus connects to a central intermediate device.
- CEach end system is connected to its respective neighbor via an intermediate device.
- DAll end and intermediate devices are connected in a chain to each other.
17Refer to the exhibit. Which statement describes the media access control methods that are used by the networks in the exhibit?
- AAll three networks use CSMA/CA
- BNone of the networks require media access control.
- CNetwork 1 uses CSMA/CD and Network 3 uses CSMA/CA
- DNetwork 1 uses CSMA/CA and Network 2 uses CSMA/CD.
- ENetwork 2 uses CSMA/CA and Network 3 uses CSMA/CD
18What is contained in the trailer of a data-link frame?
- Alogical address
- Bphysical address
- Cdata
- Derror detection
19As data travels on the media in a stream of 1s and 0s how does a receiving node identify the beginning and end of a frame?
- AThe transmitting node inserts start and stop bits into the frame.
- BThe transmitting node sends a beacon to notify that a data frame is attached.
- CThe receiving node identifies the beginning of a frame by seeing a physical address.
- DThe transmitting node sends an out-of-band signal to the receiver about the beginning of the frame.
20What is the function of the CRC value that is found in the FCS field of a frame?
- Ato verify the integrity of the received frame
- Bto verify the physical address in the frame
- Cto verify the logical address in the frame
- Dto compute the checksum header for the data field in the frame
21The term [blank_start]bandwidth[blank_end] indicates the capacity of a medium to carry data and it is typically measured in kilobits per second (kb/s) or megabits per second (Mb/s)
- Abandwidth
22What acronym is used to reference the data link sublayer that identifies the network layer protocol encapsulated in the frame? [blank_start]LLC[blank_end]
- ALLC
Informationen
- Beschreibung
- Quiz am CCNA5 Chapter 4 Exam Practice, erstellt von Matthew M am 24/10/2016.
- Autor
- Matthew M
- Sprache
- English
- Aufrufe
- 68
- Schlagwörter
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