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1 | | An IPv6 address is _________ bits long. |
| | A) | 32 |
| | B) | 64 |
| | C) | 128 |
| | D) | none of the above |
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2 | | In IPv6, options are inserted between the _________ and the ___________ data. |
| | A) | base header; extension header |
| | B) | base header; upper-layer data |
| | C) | base header; frame header |
| | D) | none of the above |
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3 | | IPv6 allows _________ security provisions than IPv4. |
| | A) | more |
| | B) | less |
| | C) | the same level |
| | D) | none of the above |
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4 | | An IPv6 address consists of ________ bytes (octets); |
| | A) | 4 |
| | B) | 8 |
| | C) | 16 |
| | D) | none of the above |
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5 | | To make addresses more readable, IPv6 specifies ____________notation. |
| | A) | dotted decimal |
| | B) | hexadecimal colon |
| | C) | both a and b |
| | D) | none of the above |
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6 | | In hexadecimal colon notation, a 128-bit address is divided into _______ sections, each _____ hexadecimal digits in length. |
| | A) | 8: 2 |
| | B) | 8: 3 |
| | C) | 8: 4 |
| | D) | none of the above |
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7 | | An IPv6 address can have up to __________ colons. |
| | A) | 8 |
| | B) | 7 |
| | C) | 4 |
| | D) | none of the above |
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8 | | An IPv6 address can have up to __________ hexadecimal digits. |
| | A) | 16 |
| | B) | 32 |
| | C) | 8 |
| | D) | none of the above |
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9 | | If an IPv6 address has digits of ________, we can abbreviate the address. |
| | A) | 1s |
| | B) | Fs |
| | C) | 0s |
| | D) | none of the above |
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10 | | In IPv6, _______ address defines a single computer. |
| | A) | a unicast |
| | B) | a multicast |
| | C) | an anycast |
| | D) | none of the above |
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11 | | In IPv6, ____ address defines a group of computers with addresses that have the same prefix. |
| | A) | a unicast |
| | B) | a multicast |
| | C) | an anycast |
| | D) | none of the above |
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12 | | _________ address defines a group of computers. |
| | A) | A unicast |
| | B) | A multicast |
| | C) | An anycast |
| | D) | none of the above |
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13 | | In IPv6, the ________ prefix defines the purpose of the address. |
| | A) | type |
| | B) | purpose |
| | C) | both a and b |
| | D) | none of the above |
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14 | | In IPv6, the___________ address is generally used by a normal host as a unicast address. |
| | A) | provider-based unicast |
| | B) | link local |
| | C) | site local |
| | D) | none of the above |
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15 | | A _________ address comprises 80 bits of zero, followed by 16 bits of one, followed by the 32-bit IPv4 address. |
| | A) | link local |
| | B) | site local |
| | C) | mapped |
| | D) | none of the above |
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16 | | A ___________ address is an address of 96 bits of zero followed by 32 bits of IPv4 address. |
| | A) | link local |
| | B) | site local |
| | C) | mapped |
| | D) | none of the above |
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17 | | A _______ address is used if a LAN uses the Internet protocols but is not connected to the Internet for security reasons. |
| | A) | link local |
| | B) | site local |
| | C) | mapped |
| | D) | none of the above |
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18 | | The ______ address is used if a site with several networks uses the Internet protocols but is not connected to the Internet for security reasons. |
| | A) | link local |
| | B) | site local |
| | C) | mapped |
| | D) | none of the above |
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19 | | Which of the following is a necessary part of the IPv6 datagram? |
| | A) | base header |
| | B) | data packet from the upper layer |
| | C) | a and b |
| | D) | none of the above |
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20 | | The _______ field in the base header restricts the lifetime of a datagram. |
| | A) | version |
| | B) | priority |
| | C) | hop limit |
| | D) | none of the above |
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21 | | When a datagram needs to be discarded in a congested network, the decision is based on the _______ field in the base header. |
| | A) | hop limit |
| | B) | priority |
| | C) | next header |
| | D) | none of the above |
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22 | | The _______ field in the base header and the sender IP address combine to indicate a unique path identifier for a specific flow of data. |
| | A) | flow label |
| | B) | next header |
| | C) | hop limit |
| | D) | none of the above |
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23 | | In the _______ extension header, the destination address changes from router to router. |
| | A) | source routing |
| | B) | fragmentation |
| | C) | authentication |
| | D) | payload |
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24 | | To request the physical address of a host whose IP address is known, a _______ message is sent. |
| | A) | membership-query |
| | B) | router-solicitation |
| | C) | neighbor-solicitation |
| | D) | neighbor-advertisement |
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25 | | If a host needs information about routers on the network, it sends a _______ message. |
| | A) | membership-report |
| | B) | router-solicitation |
| | C) | neighbor-solicitation |
| | D) | neighbor-advertisement |
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26 | | The ARP function in version 4 is part of _______ in version 6. |
| | A) | echo request and reply |
| | B) | router solicitation and advertisement |
| | C) | neighbor solicitation and advertisement |
| | D) | none of the above |
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27 | | The IGMP functions in version 4 are part of _______ in version 6. |
| | A) | echo request and reply |
| | B) | router solicitation and advertisement |
| | C) | group membership |
| | D) | none of the above |
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28 | | To join a group, a host sends a _______. |
| | A) | group-membership report |
| | B) | group-membership query |
| | C) | group-membership termination |
| | D) | none of the above |
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29 | | The purpose of echo request and echo reply is to _______. |
| | A) | report errors |
| | B) | check node-to-node communication |
| | C) | check group memberships |
| | D) | none of the above |
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30 | | A router sends a _______ message to the host to monitor group membership. |
| | A) | report |
| | B) | query |
| | C) | termination |
| | D) | none of the above |
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31 | | In error reporting the encapsulated ICMP packet goes to _______. |
| | A) | the source |
| | B) | the destination |
| | C) | a router |
| | D) | none of the above |
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32 | | In error reporting, a destination can send a _______ message if an option is not recognized. |
| | A) | parameter-problem |
| | B) | packet-too-big |
| | C) | time-exceeded |
| | D) | none of the above |
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33 | | An MTU field is found on the _______ error message to inform the sender about packet size. |
| | A) | destination-unreachable |
| | B) | time-exceeded |
| | C) | parameter-problem |
| | D) | none of the above |
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34 | | When the hop count field reaches zero and the destination has not been reached, a _______ error message is sent. |
| | A) | destination-unreachable |
| | B) | time-exceeded |
| | C) | parameter-problem |
| | D) | none of the above |
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35 | | When all fragments of a message have not been received within the designated amount of time, a _______ error message is sent. |
| | A) | destination-unreachable |
| | B) | time-exceeded |
| | C) | parameter-problem |
| | D) | none of the above |
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36 | | Errors in the header or option fields of an IP datagram require a _______ error message. |
| | A) | destination-unreachable |
| | B) | time-exceeded |
| | C) | parameter-problem |
| | D) | none of the above |
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37 | | If a member of a group wishes to terminate membership, it can _______ in response to a group membership query. |
| | A) | send a group membership report |
| | B) | send a group membership termination |
| | C) | send a group membership query |
| | D) | none of the above |
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38 | | In version 6, an independent protocol called _______ is eliminated. |
| | A) | ICMP |
| | B) | IP |
| | C) | IGMP |
| | D) | none of the above |
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39 | | The _______ packet contains information about a router. |
| | A) | router solicitation |
| | B) | router information |
| | C) | router advertisement |
| | D) | none of the above |
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40 | | When a host has the _______ address of a host but needs the _______ address, it uses a neighbor solicitation packet. |
| | A) | physical; protocol port |
| | B) | physical; data link layer |
| | C) | IP; physical |
| | D) | none of the above |
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41 | | A router can send a _______ message to a host to inform it of a more efficient path. |
| | A) | neighbor-solicitation |
| | B) | router-solicitation |
| | C) | redirection |
| | D) | none of the above |
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42 | | Which version 4 protocols are still viable and known by their same names in version 6? |
| | A) | IGMP |
| | B) | ARP |
| | C) | RARP |
| | D) | none of the above |
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43 | | Which error-reporting message from version 4 has been eliminated in version 6? |
| | A) | packet too big |
| | B) | destination unreachable |
| | C) | source quench |
| | D) | none of the above |
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44 | | Which error-reporting message is found in version 6 but not in version 4? |
| | A) | packet too big |
| | B) | destination unreachable |
| | C) | parameter problem |
| | D) | none of the above |
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