51CTO下载-CCNA作业7
1. Which LAN switch method runs a CRC on every frame?
A. Cut-through
B. Store-and-forward
C. FragmentCheck
D. FragmentFree
2. You have 10 hosts plus a rver connected to a switch. Each device is running 10Mbps halfduplex.
What is the bandwidth available for each device when it communicates to the rver?
A. 1Mpbs
B. 2Mbps
C. 10Mbps安全教育活动
D. 100Mbps
3. What is the result of gmenting a network with a bridge (switch)? (Choo two options.)
A. It increas the number of collision domains.
B. It decreas the number of collision domains.
C. It increas the number of broadcast domains.
D. It decreas the number of broadcast domains.
E. It makes smaller collision domains.
F. It makes larger collision domains.
4. Layer 2 switching provides which of the following? (Choo two options.)
A. Hardware-bad bridging (MAC)
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B. Wire speed
C. High latency
D. High cost
5. If your network is currently congested and you are using only hubs in your network, what would be the best solution to decrea congestion on your network?
A. Cascade your hubs.
B. Replace your hubs with switches.
C. Replace your hubs with routers.
D. Add faster hubs.
6. Which LAN switch method is also known as a modified version of cut-through?
契迪龙寺A. Cut-throughout
B. FragmentFree
C. Store-and-forward
D. Store-and-relea
7. Which of the following are true regarding store-and-forward? (Choo two options.)
A. The latency time varies with frame size.
B. The latency time is constant.
C. The frame is transmitted only after the complete frame is received.
D. The frame is transmitted as soon as the header of the frame is read.
8. What are the three distinct functions of layer 2 switching that increa available bandwidth on
the network? (Choo three options.)
A. Address learning
B. Routing
C. Forwarding and filtering
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D. Creating network loops
E. Loop avoidance
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F. IP addressing
9. You are working on a network design and determine that a new testing application requires multiple
hosts that must be capable of sharing data between each host and rver running 10Mbps. Other departments u applications that require less than 3Mbps to the rver. What should you
recommend?
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A. Replace the 10Mbps Ethernet hub with a 100Mbps Ethernet hub.
B. Install a router between departments.
C. U a switch with a 100Mbps uplink to the rver and 10Mbps to the hosts.
D. U a bridge to break up collision domains.
10. What technology is ud by Catalyst switches to resolve topology loops and ensure that data
flows properly through a single network path?
A. RIP
B. STP
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C. IGRP
D. Store-and-forward
E. Cut-through
11. Which of the following statements is true?
A. A switch creates a single collision domain and a single broadcast domain. A router creates a single collision domain.
B. A switch creates parate collision domains but one broadcast domain. A router provides a parate broadcast domain.
C. A switch creates a single collision domain and parate broadcast domains. A router provides a parate broadcast domain as well.
D. A switch creates parate collision domains and parate broadcast domains. A router provides parate collision domains.
12. Which of the following is true regarding layer 2 switches? (Choo two options.)
A. A switch is a hub with more ports.
B. A switch is a multi-port bridge.
C. Switches learn IP address from each frame and filter the network using the
address.
D. Switches learn MAC address by examining the source address of each frame.
13. What does a switch do when a frame is received on an interface and the destination hardware address is unknown or not in the filter table?
A. Forwards the switch to the first available link
B. Drops the frame
C. Floods the network with the frame looking for the device华硕电脑重装系统
D. Sends back a message to the originating station asking for a name resolution
14. Which LAN switch type waits for the collision window to pass before looking up the destination
hardware address in the MAC filter table and forwarding the frame?
A. Cut-through
B. Store-and-forward
C. FragmentCheck
D. FragmentFree
15. What statement about switching methods is true?
A. Store-and-forward has the lowest latency.
B. Cut-through latency time varies by packet size.
