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单选题
Which of the following class addresses is reserved for multicast？（）
A
Class A
B
Class B
C
Class C
D
Class D
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单选题Which of the following protocols is responsible for the resolution of IP addresses to MAC addresses？（）A
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单选题Which of the following Class A networks is reserved for "private networks" use only？（）A
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network 127.0.0.0C
network 129.135.0.0D
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考题
多选题Which three IP multicast address related statements are true？ （Choose three.） （）AMulticast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live （TTL） greater than 1.BMulticast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routers.CMulticast addresses 224.0.0.13 and 224.0.0.22 are reserved link-local addresses used by PIMv2 and IGMPv3.DBecause they would map to overlapping IP multicast MAC addresses， multicast addresses 224.0.1.1 and 238.1.1.1 could not be used together.EMulticast address 224.0.1.1 has been reserved for the Network Time Protocol （NTP） by the IANAFThe administratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addresses.
考题
单选题You have a Class C network, and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use?（）A
255.255.255.192B
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考题
单选题A Class C network address has been subnetted with a /27 mask.Which of the following addresses is a broadcast address for one of the resulting subnets?（）A
201.57.78.33B
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单选题Which of the following networks are reserved for private IP addresses?（）A
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172.16.128.0/15C
192.168.0.0/16D
162.17.0.0/12
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多选题Which three IP multicast address related statements are true?（）AMulticast addresses 224.0.0.13 and 224.0.0.22 are reserved link - local addresses used by PIMv2 and IGMPv3BBecause they would map to overlapping IP multicast MAC addresses, multicast addresses 224.0.1.1 and 238.1.1.1 could not be used toget herCMulticast addresses 224.0.0.0 through 224.0.0.255 are always forwarded because they are transmitted with Time to Live (TTL) greater than 1DMulticast addresses 224.0.0.5 and 224.0.0.6 are source multicast addresses for OSPF routersEThe a dministratively scoped multicast addresses 239.0.0.0 through 239.255.255.255 are similar in purpose to RFC 1918 private unicast addressesFMulticast address 224.0.1.1 has been reserved for the Network Time Protocol (NTP) by the IANA
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考题
单选题Which of the following TCP/IP addresses is a Class C address?（）A
10.0.0.1B
12.78.1.1C
172.16.1.1D
192.168.1.1
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