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CCNA Exploration Chapter 9 Ethernet(3)

By Leonard Kelley,2014-06-17 08:14
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CCNA Exploration Chapter 9 Ethernet(3) ...

    CCNA Exploration Chapter 6 Addressing. Study questions. Answers in white font. Select and change colour to see them.

    Reminder just in case. 12 (2^1 or 2 to the power 1) = 2 22 (2^2 or 2 to the power 2) = 2 x 2 = 4 32 (2^3 or 2 to the power 3) = 2 x 2 x 2 = 8 42 (2^4 or 2 to the power 4) = 2 x 2 x 2 x 2 = 16 52 (2^5 or 2 to the power 5) = 2 x 2 x 2 x 2 x 2 = 32 62 (2^6 or 2 to the power 6) = 2 x 2 x 2 x 2 x 2 x 2 = 64 72 (2^7 or 2 to the power 7) = 2 x 2 x 2 x 2 x 2 x 2 x 2 = 128 82 (2^8 or 2 to the power 8) = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 256

6.1

    How is an IPv4 address normally written?

What is an octet?

The IP address is in two parts. The bits on the left (high order) represent the:

The bits on the right (low order) represent the:

    What is the largest number that can be held in one octet (8 bits)?

Convert the binary number 10011101 to decimal.

Convert the binary number 11110000 to decimal.

Convert the decimal number 224 to binary.

Convert the decimal number 200 to binary.

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Convert the IP address 192.168.20.15 to binary.

6.2

    What are the three types of IP address in the range of a network?

What information does the network prefix give?

    If a host IP address is 192.168.3.55 and the prefix length is /24, what are the network address and broadcast address of the host’s network?

    If a host IP address is 172.16.29.104 and the prefix length is /16, what are the network address and broadcast address of the host’s network?

    If a host IP address is 172.16.29.104 and the prefix length is /24, what are the network address and broadcast address of the host’s network?

    A host IP address is 201.37.16.9 and the prefix length is /28. How many bits of the last octet are in the network part of the address?

    The host address and prefix are the same as in the previous question. Write the last octet in binary showing all 8 bits.

    The host address and prefix are the same as before. The network address has all the bits in the host part set to 0. What is the last octet of the network address written in binary?

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    The host address and prefix are the same as before. What is the network address written as four octets of decimal?

    The host address and prefix are the same as before. The network address has all the bits in the host part set to 1. What is the last octet of the network address written in binary?

    The host address and prefix are the same as before. What is the broadcast address written as four octets of decimal?

    A host IP address is 201.37.16.19 and the prefix length is /28. What are the network address and the broadcast address of the host’s network?

    A host IP address is 201.37.16.19 and the prefix length is /28. What are the first and last host addresses of the network?

    A host IP address is 150.90.163.12 and the prefix length is /22. What are the network address and the broadcast address of the host’s network?

What is a unicast packet?

What is a broadcast packet?

What is a multicast packet?

    What destination IP address would a host use for a limited broadcast to hosts on its own network?

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    A host is using the broadcast address 192.168.1.255 to send a directed broadcast to hosts on the 192.168.1.0 network, which is the other side of a router. Will the broadcast reach the hosts?

Give three examples of the use of broadcast messages.

Which IPv4 addresses are used for multicasts?

    Which IPv4 addresses are not currently used to address hosts, but are reserved for experimental purposes?

    What is the difference between public addresses and private addresses?

What are the blocks of private addresses?

    What is the name of the service that can allow hosts on a network using private addresses to have the use of a public address or addresses to access the Internet?

    Why are hosts never given IP addresses with the first octet 0?

What is special about the address 127.0.0.1?

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    Which other addresses have special uses and are not routed over the Internet?

What is classful network addressing?

    In class A, how much of the IP address is in the network part, and what is the range of numbers in the first octet?

    In class B, how much of the IP address is in the network part, and what is the range of numbers in the first octet?

    In class C, how much of the IP address is in the network part, and what is the range of numbers in the first octet?

What are the subnet masks for class A, class B and class C?

    We now use classless addressing, so why is it still useful to learn about classful addressing?

6.3

    Give three reasons why the allocation of IP addresses in a company network should be planned and documented carefully.

    What is static IP addressing and which devices are normally given static addresses?

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    What is dynamic IP addressing and why is it used for the majority of workstations?

    Why should the host addresses within a network be split into blocks of adjacent addresses, with one block for workstations, one block for servers, one block for network devices etc?

    Which network address should be given to the default gateway?

What is IANA?

What was the main reason for developing IPv6?

    How many bits are in an IPv6 address, and how are they written?

What are the advantages of IPv6 over IPv4?

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6.4

    The subnet mask gives the same information as:

What does a binary 1 in the subnet mask mean?

What does a binary 0 in the subnet mask mean?