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QUESTION 127
Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet? (Select two answer choices.)
A. Full-duplex Ethernet uses CSMA/CD to prevent collisions.
B. Half-duplex Ethernet uses a loopback circuit to detect collisions.
C. A full-duplex Ethernet card allows 20Mbps for data transmission.
D. Full-duplex Ethernet makes use of two pairs of wires for data.
E. An Ethernet hub can operate both half and full duplex simultaneously.
Correct Answer: BD
QUESTION 128
Why is full-duplex Ethernet superior to its single-duplex counterpart? (Select two answer choices.)
A. It uses inexpensive hubs
B. It operates without collisions
C. It operates on switches
D. It provides faster data transfer
E. It utilizes fewer wiring pairs
Correct Answer: BD
QUESTION 129
Which IEEE standard is used to define Wi-Fi?
A. IEEE 802.3
B. IEEE 802.5
C. IEEE 802.1 1h
D. IEEE 802.11c
E. IEEE 802.11

Correct Answer: E
QUESTION 130
What is the maximum data rate specified by the IEEE 802.1 1B standard for wireless LANS?
A. 10 Mbps
B. 11 Mbps
C. 54 Mbps
D. 100 Mbps
E. none of the above

Correct Answer: B
QUESTION 131
Assuming you build networks to exact specifications, what is the recommended maximum length a 10BaseT cable can be before it has to be segmented or repeated?
A. 100 meters
B. 100 feet
C. 100 yards
D. 200 meters

Correct Answer: A
QUESTION 132
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.

Correct Answer: B
QUESTION 133
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.

Correct Answer: BC
QUESTION 134
Which type of cable should be used to make a connection between the Fa0/0 port on a router and the Fa0/0 port switch?
A. Rollover cable
B. Console cab le

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C. Crossover cable
D. Straight-through cable
E. Serial cable

Correct Answer: D
QUESTION 135
What components are required to directly connect two PCs so they are able to participate in a simple peer-to-per network? Choose three
A. Straight-through cable
B. Compatible network interfaces
C. Networking protocol
D. Hub
E. Crossover cable
F. router

Correct Answer: BCE
QUESTION 136
Which Layer 1 devices can be used to enlarge the area covered by a single LAN segment? Select two
A. Switch
B. Router
C. NIC
D. hub
E. Repeater
F. RJ-45 transceiver

Correct Answer: DE
QUESTION 137
Exhibit
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The exhibit shows some common router ports. Which port can be used for a WAN T1 connection?
A. AUI
B. BRI
C. Console
D. Serial 0

Correct Answer: B
QUESTION 138
You are a network technician at Certkiller , Inc. The Certkiller network topology is shown in the following exhibit:

Each host is connected through its own 10Mbps half-duplex switch port to the e0 interface of the router
Certkiller 1.
What is the bandwidth available to each host?

A. 1 Mbps
B. 10 Mbps
C. 20 Mbps
D. 100 Mbps
E. 120 Mbps

Correct Answer: B
QUESTION 139
Which of the following are true of Ethernet technology?
A. Hosts use a logical ring topology.

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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.

Correct Answer: B
QUESTION 140
Which of the following statements are true?
A. Each pair of wires in a UTP cable is wrapped in a metallic foil.
B. The four pairs of wires in a UTP cable are wrapped in a metallic braid or foil.
C. UTP uses RJ-11 connectors.
D. UTP uses RJ-45 connectors.
E. UTP is immune to EMI.

Correct Answer: D

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