Which two of the addresses below are available for host addresses on the subnet 192.168.15.19/28?（）

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• Which of the addresses below is an example of a valid unicast address?（）

  A . 172.31.128.255./18 B . 255.255.255.255 C . 192.168.24.59/30 D . 224.0.0.5 E . All of the above

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• Which two features did WPAv1 add to address the inherent weaknesses found in WEP?（）

  A . a stronger encryption algorithm B . key mixing using temporal keys C . shared key authentication D . a shorter initialization vector E . per frame sequence counter

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• Which two of these statements are true of IPv6 address representation?（）

  A . There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast. B . A single interface may be assigned multiple IPv6 addresses of any type. C . Every IPv6 interface contains at least one loopback address. D . The first 64 bits represent the dynamically created interface ID. E . Leading zeros in an IPv6 16 bit hexadecimal field are mandatory.

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• Address translation is another component of Layer 3 design. Which two types of address translation allow an IP Address to be duplicated？ （）

  A .  PAT B .  CAT C .  NAT D .  DAT E .  FAT

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• Router R1 has two LAN interfaces and three serial interfaces enabled for IPv6. All the inte rfaces use link local addresses automatically generated by the router. Which of the following could be the link local address of R1's interface S0/0?（）

  A . FEA0::200:FF:FE11:0 B . FE80::200:FF:FE11:1111 C . FE80::0213:19FF:FE7B:0:1 D . FEB0::211:11FF:FE11: 1111

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• Which two subnetworks would be included in the summarized address of 172.31.80.0 /20?（）

  A . 172.31.17.4/30 B . 172.31.51.16/30 C . 172.31.64.0/18 D . 172.31.80.0/22 E . 172.31.92.0/22 F . 172.31.192.0/18

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• Which two subnetworks would be included in the summarized address of 172.31.80.0 /20？ （）

  A . 172.31.17.4/30 B . 172.31.51.16/30 C . 172.31.64.0/18 D . 172.31.80.0/22 E . 172.31.92.0/22 F . 172.31.192.0/18

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• Which two IP multicast addresses belong to the group represented by the MAC address of 0x01-00-5E-15-6A-2C？ （）

  A .  224.21.106.44 B .  224.25.106.44 C .  233.149.106.44 D .  236.25.106.44 E .  239.153.106.44

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• Which of the following describe private IP addresses? (Choose two.)（）

  A . addresses chosen by a company to communicate with the Internet B . addresses that cannot be routed through the public Internet C . addresses that can be routed through the public Internet D . a scheme to conserve public addresses E . addresses licensed to enterprises or ISPs by an Internet registry organizatio

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• Which two addresses can be assigned to a host with a subnet mask of 255.255.254.0？（）

  A . 113.10.4.0 B . 186.54.3.0 C . 175.33.3.255 D . 26.35.2.255 E . 17.35.36.0

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• The VPN termination function provides the ability to connect two networks together securely over the internet. Which of these is true of IP addressing with regard to VPN termination?（）

  A . termination devices need routable addresses inside the VPN B . termination devices need not routable addresses inside the VPN C . IGP routing protocols will update their routing tables over anIPsec VPN D . addressing designs need to allow for summarizatio

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• If two routers， both reachable from one another， originate functionally equivalent type 2 external- LSAs （i.e，same destination， cost and non-zero forwarding address ）， Which of the following statements wouldapply ？（）

  A . Two LSAs will exist in the network for this destination， and both will be used B . Two LSAs will exist in the network for this destination， but only the one generated by the highest RID ASBR will be used C . Only the LSA generated by the highest RID ASBR will exist in the network D . Only the LSA generated by the lowest RID ASBR will exist in the network

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• Which two multicast IP addresses can be represented by the multicast MAC addre ss 0100.5e0A.0A07?（）

  A . 228.10.10.7 B . 229.11.10.7 C . 229.138.10.7 D . 229.138.10.8 E . 228.10.10.8 F . 228.10.138.7

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• Which two addresses can be assigned to a host with a subnet mask of 255.255.254.0？（）

  A . 113.10.4.0 B . 186.54.3.0 C . 175.33.3.255 D . 26.35.2.255 E . 17.35.36.0

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• Which of the following describe private IP addresses?（）

  A . Addresses chosen by a company to communicate with the Internet. B . Addresses that cannot be routed through the public Internet. C . Addresses that can be routed through the public Internet. D . A scheme to conserve public addresses. E . Addresses licensed to enterprise or ISPs by an Internet registry organization.

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• Which two statements describe characteristics of IPv6 unicast addressing?（）

  A . Global addresses start with 2000::/3. B . Link-local addresses start with FE00:/12. C . Link-local addresses start with FF00::/10. D . There is only one loopback address and it is ::1. E . If a global address is assigned to an interface, then that is the only allowable address for the interface.

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• which address range efficiently summarizes the routing table of the addresses for router main?（）

  A . 172.16.0.0/18 B . 172.16.0.0/16 C . 172.16.0.0/20 D . 172.16.0.0/21

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• When an Enterprise Campus network designer is addressing the merger of two companies with different IGPs， which of the following is considering a super routing design？（）

  A .  Eliminate the management and support for redistribution by choosing and cutting over to asingle IGP at the time of merger B .  Maintain distinct pockets across a moving boundary of routing protocols， redistributing betweenthem C .  Manipulate the administrative distance of the different IGPs to be equal throughout the network D .  Leave the IGPs independent without redistribution wherever communication between companyentities is not required

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• The VPN termination function provides the ability to connect two networks together securely overthe internet. Which of these is true of IP addressing with regard to VPN termination？（）

  A .  termination devices need routable addresses inside the VPN B .  termination devices need not routable addresses inside the VPN C .  IGP routing protocols will update their routing tables over an IPsec VPN D .  addressing designs need to allow for summarizatio

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• Which two statements about MAC addresses in the Cisco UCS are true?（）

  A . The first 2 octets represent the manufacturer OUI. B . The first 3 octets represent the manufacturer OUI. C . The last 3 octets are assigned by the organization itseIf. D . The last 4 octets are assigned by the organization itseIf.

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• The internet address 198.102.27.120 represents which of the following addresses？（）

  A . Class A B . Class B C . Class C D . Class D

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• Which two are characteristics of an IPv6 multicast address？（）

  A . First （most significant ） octet is FF in hex B . Starts with a prefix of FE80 to FEBF in hex C . Starts with a prefix of FECO to FEFF in hex D . Second octet contains a 4-bit multicast scope field E . Last 64 bit contains the modified MAC address of the Ethernet interface F . Is allocated from the unicast address space

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• Which of the following address is the most appropriate?

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