19. For the l AN in Question (18 the Central Node is a Layer 2 switch and the li

Question

19. For the l AN in Question (18 the Central Node is a Layer 2 switch and the links are duplex, what is the maximum throughput of this LAN? a. 30 Mbps 60 Mbps c. 90 Mbps None of the above ue aic sendi an ale 20. Consider the following network LANA Beklge LAN B Statiea 11 Error detection is supported in this network. Station 2 is trying to communicate with Station 20. Assume that we know by the time the signal reaches the bridge some errors have already occurred in the signal Which of ehe foillowing statements is correct a. The bridge detects the errors, notifies Station 2, and discards the corrupted signal b. The bridge detects the errors, notifies Station 2, and relays the corrupted signal as is to Station 20 c The bridge relays the corrupted signal as is to Station 20 d. None of the above OLL

Explanation / Answer

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In the first image, the 19th question requires data from the previous questions. Provide the data.

20th question:

answer: a

Bridges are link layer devices. Link layer takes the data(called datagrams) from network layer and encapsulates them to form a frame. It adds many headers and trailer(called frame header and frame trailer) to the actual datagram. These trailers have many error detection and correction techniques like CRC or checksum.

Bridges have access to the frame trailer data and can perform error detection and correction. If it detects error it discards the frame.

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