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- CCNA Routing and Switching 200-125
16.
Which address is a multicast address?
- A.fe80:db80:db01:ada0:1112::1
- B.2005:acd:234:1132::43
- C.fd00:ac34:34b:8064:234a::7
- D.ff00::10
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| The multicast address is defined as ff00::/8. Multicast addresses always start with ff. |
17.
Which address is a unique-local address?
- A.fe80:db80:db01:ada0:1112::1
- B.2005:acd:234:1132::43
- C.fd00:ac34:34b:8064:234a::7
- D.ff00::10
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The unique-local address is defined as fc00::/7. Unique-local addresses have replaced site-local addresses as of 2004 and are non-routable. The valid IPv6 range is fc00:: to fd00:: despite IANA reserving fc00::/7 as the fc00:: range. The range should not be used since the 8th bit is considered the “local bit” and is required to be a 1, as in, for example, 1111 1101 = fd. |
18.
For global unicast addresses, which part of the address is allotted by the RIR, or
Regional Internet Registry?
- A.First 23 bits
- B.First 32 bits
- C.First 48 bits
- D.First 64 bits
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| The first 23 bits are allotted to the ISP by the RIR for the region of the world for which the ISP is requesting the prefix. |
19.
Which address is a link-local address?
- A.fe80:db80:db01:ada0:1112::1
- B.2005:acd:234:1132::43
- C.fd00:ac34:34b:8064:234a::7
- D.ff00:101:4ab0:3b3e::10
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| The link-local address is defined as fe80::/10. Any address starting with fe80 is non-routable. |
20.
Which address is a global unicast address?
- A.fe80:db80:db01:ada0:1112::1
- B.2005:acd:234:1132::43
- C.fd00:ac34:34b:8064:234a::7
- D.ff00:101:4ab0:3b3e::10
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The global unicast address is defined as 2000::/3. This provides a valid range of 2000:: to 3fff::. |
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