多項(xiàng)選擇題What are the differences between full-duplex Ethernet and half-duplex Ethernet?()

A. Half-duplex Ethernet operates in a shared collision domain.
B. Full-duplex Ethernet has a lower effective throughput.
C. Half-duplex Ethernet operates in a private collision domain.
D. Full-duplex Ethernet allows two-way communication.
E. Half-duplex Ethernet operates in a private broadcast domain.


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1.多項(xiàng)選擇題Why is full-duplex Ethernet superior to its single-duplex counterpart?()

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

2.多項(xiàng)選擇題Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?()

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.

3.單項(xiàng)選擇題On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously,resulting in a collision. Following this collision, what will the hosts do?()

A. The destination host sends a request to the source for retransmission.
B. The jam signal indicates that the collision has been cleared.
C. The hosts will attempt to resume transmission after a time delay has expired.
D. An electrical pulse indicates that the collision has cleared.
E. The router on the segment will signal that the collision has cleared.
F. The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.

4.多項(xiàng)選擇題What is the IEEE standard associated with Gigabit Ethernet?()

A. 802.11
B. 802.5
C. 802.3ab
D. 802.3ae
E. 802.3z
F. 802.3u

5.多項(xiàng)選擇題Which of the following can lead to the contribution of LAN traffic congestion?()

A. Too many hosts in a broadcast domain
B. Full duplex operation
C. Broadcast storms
D. Multicasting
E. Segmentation
F. Low bandwidth

6.多項(xiàng)選擇題You have an Ethernet network. Which of the conditions below can lead to increased congestion on your network?()

A. The use of Full-Duplex Mode.
B. The Creation on New Collision Domains.
C. The Creation on New Broadcast Domains.
D. The Addition of Hubs to the Network.
E. The use of switches in the Network.
F. The Amount of ARP or IPX SAP Traffic.

7.單項(xiàng)選擇題Which one of the following actions would actually increase congestion on an Ethernet network?()

A. Increasing the number of collision domains.
B. Micro-segmenting the network.
C. Adding hubs for connectivity to the network.
D. Putting additional switches in the network.
E. Implementing VLANs in the network.

8.多項(xiàng)選擇題In which Spanning-Tree states does a switch port learn MAC addresses?()

A. Blocking
B. Listening
C. Forwarding
D. Learning
E. Relaying

9.單項(xiàng)選擇題In a switched LAN network, what is the Spanning-Tree algorithm used for?()

A. It is used to provide a mechanism for routing updates in switched environments.
B. It is used to prevent routing loops in networks with redundant routes.
C. It is used to prevent switching loops in networks with redundant switched routes.
D. It is used to manage, the addition, deletion, and naming of VLANs across multiple switches.
E. It is used to segment a network into multiple collision domains.
F. None of the above.
G. All of the above are functions of STP.

10.單項(xiàng)選擇題What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?()

A. All switch and bridge ports are in the forwarding state.
B. All switch and bridge ports are in the stand-by state.
C. All switch and bridge ports are assigned as either root or designated ports.
D. All switch and bridge ports are in either the forwarding or blocking state.
E. All switch and bridge are either blocking or looping.

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