Information Technology Reference
In-Depth Information
21.
Which of the following is true about fragmentation?
a.
Routers between source and destination hosts can fragment IPv4 and IPv6
packets.
b.
Routers between source and destination hosts cannot fragment IPv4 and IPv6
packets.
c.
Routers between source and destination hosts can fragment IPv6 packets only.
IPv4 packets cannot be fragmented.
d.
Routers between source and destination hosts can fragment IPv4 packets only.
IPv6 packets cannot be fragmented.
22.
A packet sent to an anycast address reaches what?
a.
The nearest destination in a set of hosts
b.
All destinations in a set of hosts
c.
Broadcasts to all hosts
d.
Global unicast destinations
23.
Which of the following is/are true about IPv6 and IPv4 headers?
a.
The IPv6 header is of fixed length, and the Next Header field describes the up-
per-layer protocol.
b.
The IPv4 header is of variable length, and the Protocol field describes the upper-
layer protocol.
c.
The IPv6 header is of fixed length, and the Protocol field describes the upper-
layer protocol.
d.
A and B
e.
B and C
24.
An organization uses an IPv6 address range that it received from its ISP. The IPv6 ad-
dresses will be used internally, and employees will access the Internet using Port Ad-
dress Translation. What is required for DNS?
a.
DNS servers need to support only IPv4 addresses.
b.
DNS servers need to support only IPv6 addresses.
c.
No changes are needed to the DNS servers.
d.
DNS servers need to support both IPv4 and IPv6 addresses
e.
Additional DNS servers for IPv6 addresses are needed.
f.
DNS servers are not needed for PAT.
