Information Technology Reference
In-Depth Information
The answers to these questions appear in Appendix A. For more practice with exam for-
mat questions, use the exam engine on the CD-ROM.
1.
List the RFC 1918 private address ranges.
2.
Tr ue or fals e: You c an u s e DHCP to s pec ify the TFTP ho st's IP addre s s to a client P C.
3.
Tr ue or fals e: 255.255.255.248 and /28 are t wo repre s entat ion s of the s ame IP mask.
4.
Tr ue or fals e: Upper-layer protocols are ident ified in the IP header 's protocol field.
TCP is protocol 6, and UDP is protocol 17.
5.
Fill in the blank: Without any options, the IP header is _________ bytes in length.
6.
The IP header's ToS field is redefined as the DS field. How many bits does DSCP use
for packet clas s ific at ion, and how many levels of clas s ific at ion are po s s ible?
7.
Tr ue or fals e: NAT u s e s different IP addre s s e s for t ran slat ion s. PAT u s e s different por t
numbers to identify translations.
8.
Tr ue or fals e: The IP header 's header check s um field per for m s the check s um of the IP
header and data.
9.
Calculate the subnet, the address range within the subnet, and the subnet broadcast
of the address 172.56.5.245/22.
10.
When packets are fragmented at the network layer, where are the fragments reassem-
bled?
11.
Which protocol can you use to configure a default gateway setting on a host?
a.
ARP
b.
DHCP
c.
DNS
d.
RARP
12.
How many host addresses are available with a Class B network with the default mask?
a.
63,998
b.
64,000
c.
65,534
d.
65,536
13.
Which of the following is a dotted-decimal representation of a /26 prefix mask?
a.
255.255.255.128
b.
255.255.255.192
c.
255.255.255.224
d.
255.255.255.252
