READ Free Dumps For Cisco- 100-101
| Question ID 6393 | If an Ethernet port on a router was assigned an IP address of 172.16.112.1/20, what is the maximum number of hosts allowed on this subnet?
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| Option A | 1024
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| Option B | 2046
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| Option C | 4094
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| Option D | . 4096
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| Option E | . 8190
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| Correct Answer | c |
Explanation Each octet represents eight bits. The bits, in turn, represent (from left to right): 128, 64, 32 , 16 , 8, 4, 2, 1Add them up and you get 255. Add one for the all zeros option, and the total is 256. Now take away one of these for the network address (all zeros) and another for the broadcast address (all ones). Each octet represents 254 possible hosts. Or 254 possible networks. Unless you have subnet zero set on your network gear, in which case you could conceivably have 255. The CIDR addressing format (/20) tells us that 20 bits are used for the network portion, so the maximum number of networks are 2^20 minus one if you have subnet zero enabled, or minus 2 if not.You asked about the number of hosts. That will be 32 minus the number of network bits, minus two. So calculate it as (2^(32- 20))-2, or (2^12)-2 = 4094
| Question ID 6394 | Which statements are TRUE regarding Internet Protocol version 6 (IPv6) addresses? (Choose three.)
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| Option A | An IPv6 address is divided into eight 16-bit groups
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| Option B | A double colon (::) can only be used once in a single IPv6 address
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| Option C | . IPv6 addresses are 196 bits in length.
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| Option D | Leading zeros cannot be omitted in an IPv6 address
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| Option E | Groups with a value of 0 can be represented with a single 0 in IPv6 address.
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| Correct Answer | abe |
Explanation IPv6 addresses are divided into eight 16-bit groups, a double colon (::) can only be used once in an IPv6 address, and groups with a value of 0 can be represented with a single 0 in an IPv6 address. The following statements are also true regarding IPv6 address: IPv6 addresses are 128 bits in length. Eight 16-bit groups are divided by a colon (:). Multiple groups of 16-bit 0s can be represented with double colon (::). Double colons (::) represent only 0s. Leading zeros can be omitted in an IPv6 address. The option stating that IPv6 addresses are 196 bits in length is incorrect. IPv6 addresses are 128 bits in length. The option stating that leading zeros cannot be omitted in an IPv6 address is incorrect. Leading zeros can be omitted in an IPv6 address