Chapter 4: IP Addressing
TRUE/FALSE
1. An IP address has 32 bits divided into four octets (four sets of eight binary digits).
2. TCP/IP networks cannot use MAC addresses in communication.
3. TCP/IP hosts use the combination of the IP address and the subnet mask to determine if other
addresses are local or remote.
4. The allocation of network numbers based on CIDR has let to the depletion of IP addresses.
5. Basic routing protocols such as RIP version 1 and IGRP support VLSM.
MULTIPLE CHOICE
1. A(n) ____ address identifies both a network and a host, so you can route communications through
large networks, including the Internet.
a.
ARP
c.
IP
b.
HMAC
d.
MAC
2. It seems that 127.0.0.1 (decimal) is the highest assignable Class A address, but that particular address
range is reserved as the ____ address.
a.
multicast
c.
broadcast
b.
loopback
d.
unicast
3. IP Class ____ addresses (also known as multicast addresses) are reserved for multicasting.
a.
A
c.
C
b.
B
d.
D
4. To determine how many digits are used for the network identifier, you must look at the ____, which is
a required component for all IP hosts.
a.
subnet mask
c.
network mask
b.
MAC mask
d.
TCP/IP mask
5. ____ broadcasts are for a specific subnet.
a.
Flooded
c.
Half-duplex
b.
Directed
d.
Full-duplex
6. When the host portion of an IP address is all binary zeros, that address is the ____ identifier.
a.
subnetwork
c.
class
b.
broadcast
d.
multicast
7. When the host portion of an IP address is all binary ones, that address is a ____ address.
a.
multicast
c.
subnetwork
b.
class
d.
broadcast
8. ____ is based on assigning IP addresses on criteria other than octet boundaries.
a.
ARIN
c.
CIDR
b.
IANNA
d.
VLSR
9. The CIDR addressing method allows the use of a ____ to designate the number of network bits in the
mask.
a.
prefix
c.
route mask
b.
suffix
d.
mask table
10. ____ tell the computer or router which part of an IP address is the network portion and which part is
the host portion.
a.
CIDR tables
c.
Subnet masks
b.
Summarization tables
d.
Router masks
11. In a ____ world, the routing updates carry subnet mask information and allow different masks to be
used on different subnets.
a.
classful
c.
class-based
b.
class-dependant
d.
classless
12. The decimal number 192 expressed in binary is ____.
a.
10000101
c.
11010010
b.
11000000
d.
11100100
13. The ____ numbering system is base 16; in other words, 16 numerals are used to express any given
number.
a.
binary
c.
hexadecimal
b.
decimal
d.
vigesimal
14. Although the base ____ numbering system seems foreign at first glance, largely due to the addition of
letters, it really is an efficient way to express large numbers such as MAC and IPv6 addresses.
a.
2
c.
20
b.
16
d.
21
15. ____ is the version of IP currently deployed on most systems today.
a.
IPX
c.
IPv6
b.
IP2
d.
IPv4
16. ____ was originally designed to address the eventual depletion of IPv4 addresses.
a.
IPv6
c.
IP2
b.
IPX
d.
IPNext
17. ____ allows a single IP address to provide connectivity for many hosts and is widely used on networks
of all sizes.
a.
IPSec
c.
ARP
b.
NAT
d.
CIDR
18. ____ is the most important layer 3 security protocol.
a.
IPSec
c.
DNS
b.
ARP
d.
NAT
19. IPv4 networks rely on ____, which is inefficient because many hosts unnecessarily see and partially
process traffic not ultimately destined for them.
a.
multicasting
c.
unicasting
b.
anycasting
d.
broadcasting
20. The ____ transition method involves enabling IPv6 on all routers, switches, and end nodes but not
disabling IPv4—so both version 4 and version 6 stacks run at the same time.
a.
scheduling
c.
dual stack
b.
tunneling
d.
natting
21. ____ is a transition method that encapsulates IPv6 traffic inside IPv4 packets.
a.
Tunneling
c.
Natting
b.
Scheduling
d.
Dual stack
COMPLETION
1. The ____________________ devised the hierarchical IP addressing structure.
2. ____________________ is the sending of a stream of data (usually audio and video) to multiple
computers simultaneously.
3. ____________________ broadcasts are broadcasts for any subnet and use the IP address
255.255.255.255.
4. The purpose of ____________________ is to allow many IP subnets to be advertised as one.
5. ____________________ solves the design problem of basic subnetting by allowing different masks on
the subnets.
MATCHING
Match each item with a statement below:
a.
ARIN
f.
RIP version 1
b.
ICANN
g.
OSPF
c.
Subnet mask
h.
Nibble
d.
CIDR
i.
IPv6
e.
Summarization
1. a classless routing protocol
2. the next generation of IP
3. indicates how much of the IP address represents the network or subnet
4. also known as route aggregation
5. a global, government-independent entity with overall responsibility for the Internet
6. four bits, which is half of a byte
7. manages IP addresses in the United States
8. developed to slow the exhaustion of IP addresses
9. a classful routing protocol
SHORT ANSWER
1. Briefly describe the Class A IP addresses.
2. Briefly describe Class B IP addresses.
3. Briefly describe Class C IP addresses.
4. Describe private IP ranges.
5. What are the standard (default) subnet masks?
6. Describe the IP broadcast address.
ANS:
7. What are some reasons to incorporate subnetting into an organization’s network?
8. What are the subnetting formulas?
9. Briefly describe the hexadecimal numbering system.
10. Describe the tunneling transition to IPv6 method.
ANS:
