a. increased IP address space
b. improved routing characteristics
c. enhanced Quality of Service (QoS) options
d. improved support for mobile users
e. built-in security features and functions
2. How many bit wide is an IPv6 address?
c. 128
3. What is the correct interpretation of the symbol :: in an IPv6 address?
a. Substitute as many zeros as are needed to construct a complete address.
4. The special IP address symbol :: can occur more than once in an IPv6 address. false 5. The basic numerical notation used to convey IPv6 addresses in writing is:
c. hexadecimal
6. What does the “slash-decimal” notation that can follow an IPv6 address denote?
a. number of bits in the network portion of the address
7. How can you convert a 48-bit MAC Ethernet address into the EUI-64 format?
c. Separate the manufacturer ID (first 24 bits) from the NIC sequence number (last 24 bits) with hexadecimal 0xFFFE
8. Each type of network, such as Ethernet, token ring, FDDI, SONET, and so forth, has its own precise techniques to create unique IPv6 interface identifiers.
True
9. What types of IPv6 addresses can contain an IPv4 address?
c. IPv4-compatible
d. IPv4-mapped
10. Both types of IPv6 addresses that can contain IPv4 addresses exist to permit (a) IPv6 Peers to tunnel IPv6 traffic through IPv4 links and (b) IPv6 nodes to communicate with IPv4-only nodes (and hence, they do not understand IPv6 addresses or protocols).
True
11. Which of the following special IPv6 addresses may not be used as a destination address?
d. :: (all-zeros address)
12. Which techniques replace use of broadcast in IPv6?
a. multicast
b. anycast
13. What information does the second byte of a multicast address convey?
b. first the Flags field, then the Scope field
14. Which type of device defines the “nearest” instance of an anycast address?
c. local router
15. What single anycast address must be supported