A subnet mask is used to mask a portion of the IP address so that TCP/IP can distinguish the __ ID from the __ ID.

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What is a "preamble" in IEEE 802.3 frame? a. an indication of the end of a frame b. an indication of the start of a new frame c. an indication of congestion d. an indication of a corrupted frame

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True or False: The purpose of each layer of the OSI is to provide services to the next lower level?

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Tell me what advantages does fiber optics have over other media?

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You have a class B subnet (128.252.0.0). You want to divide it into 2 subnets. What will the ranges of IPs?

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Define rsa algorithm?

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Which topology, uses centralized hub from which a number of signals carrying cables goes out to individual devices on the branch.

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T/F: 802.3 can not "see" upper layers.

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Your workstation can ping itself by ip, but it can't ping ip of the others on the same subnet. why? (The physical connection is OK).

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what is the difference b/w CIDR AND VLSM?

2 Answers   TCS,

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What is a route flap?

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You try "ping server1" and you get "no answer from server1". Why ? (assume that your machine resolved the name correctly).

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