examways 640-822 exam - interconnecting cisco networking devices part 1

Cisco 640-822

Interconnecting Cisco Networking Devices Part 1

10 Q&A

Version 3.0

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www.640-822.com Q: 1 QUESTION 1

Which one of the following characteristics is true regarding the use of hubs and

switches?

A. Hubs can have their ports be configured with VLANs

B. Using hubs is costly with regard to bandwidth availability.

C. Switches can not forward broadcasts.

D. Switches are more efficient than hubs in processing frames.

E. Switches increase the number of collision domains in the network.

Answer: E


Refer to the Hotcerts network shown below:

You work as a network technician at Hotcerts.com. Please study the exhibit

carefully. Based on the information shown above, what is needed to allow host

Hotcerts 1 to ping host Hotcerts 2?


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A. A crossover cable connecting the switches

B. A backbone switch connecting the switches with either fiber optic or straight-through

cables

C. A straight-through cable connecting the switches

D. A CSU/DSU connected to the switches with straight-through cables

E. A router connected to the switches with straight-through cables

Answer: E


A host computer has been correctly configured with a static IP address, but the

default gateway is incorrectly set. Which layer of the OSI model will be first affected

by this configuration error?

A. Layer 1

B. Layer 2

C. Layer 3

D. Layer 4

E. Layer 5

F. Layer 6

G. Layer 7

Answer: C



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When you compare the differences between half-duplex and full-duplex Ethernet,

which of the following characteristics are exclusive to half-duplex? (Select two

answer choices)

A. Half-duplex Ethernet operates in a shared collision domain.

B. Half-duplex Ethernet operates in an exclusive broadcast domain.

C. Half-duplex Ethernet has efficient throughput.

D. Half-duplex Ethernet has lower effective throughput.

E. Half-duplex Ethernet operates in an exclusive collision domain.

Answer: A, D


Two stations on the Hotcerts LAN transmit at the same time, resulting in a collision.

What happens when a collision occurs on the network? (Choose all that apply)

A. Each device on the Ethernet segment stops transmitting for a short time.

B. A jam signal informs all devices that a collision occurred.

C. When data transmission resumes, the devices that were involved in the collision have

priority to transmit.

D. The devices that are involved in the collision stops transmitting for a short time.

E. The collision invokes a random back-off algorithm.

Answer: B, D, E



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Which of the following are true of Ethernet technology?

A. Hosts use a logical ring topology.

B. Hosts use a logical bus topology

C. Hosts must wait for an electronic signal to transfer data.

D. Hosts are directly connected to a wiring concentrator called a MSAU.

E. None of the above

Answer: B


With regard to Ethernet media access methods, which of the following are true?

(Choose all that apply.)

A. A device waits for an electronic signal before transmitting.

B. A device listens and waits until the media is not busy before transmitting.

C. All devices on an Ethernet segment see data that passes on the network medium.

D. Only the sender and the receiver devices see data that passes on the network medium.

E. Ethernet networks allow you to configured devises with higher transmission priority.


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Answer: B, C


Which two statements describe the operation of the CSMA/CD access method,

which is in use on the Hotcerts network? (Choose two)

A. After a collision, the station that detected the collision has first priority to resend the

lost data.

B. In a CSMA/CD collision domain, stations must wait until the media is not in use

before transmitting.

C. In a CSMA/CD collision domain, multiple stations can successfully transmit data

simultaneously.

D. The use of hubs to enlarge the size of collision domains is one way to improve the

operation of the CSMA/CD access method.

E. After a collision, all stations run a random backoff algorithm. When the backoff delay

period has expired, all stations have equal priority to transmit data.

F. After a collision, all stations involved run an identical backoff algorithm and then

synchronize with each other prior to transmitting data.

Answer: B, E


Which three statements are true about the operation of a full-duplex Ethernet

network, which is being used in the Hotcerts LAN? (Choose three)

A. Ethernet hub ports are preconfigured for full-duplex mode.

B. The host network card and the switch port must be capable of operating in full-duplex

mode.

C. There are no collisions in full-duplex mode.


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D. In a full-duplex environment, the host network card must check for the availability of

the network media before transmitting.

E. A dedicated switch port is required for each full-duplex node.

Answer: B, C, E


Exhibit:

You work as a network technician at Hotcerts . Please study the exhibit carefully.

Which statement describes the operational state of the Hotcerts 2 FastEthernet 0/0

interface?

A. The interface is operational and currently handling traffic.

B. The interface has failed because of a media error.

C. The interface requires a no shutdown command to be issued.

D. The interface is generating protocol errors.

E. None of the above.


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Answer: A

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