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Chapter10

True/False
Indicate whether the statement is true or false.
 

 1. 
On a network using TCP/IP, some nodes may use multiple IP addresses.
 

 2. 
In CIDR, conventional network class distinctions do not exist.
 

 3. 
The MIME standard replaces SMTP.
 

 4. 
POP3’s design makes it best suited to users who retrieve their mail from the same workstation all the time.
 

 5. 
IMAP4 servers require less storage space and usually more processing resources than POP servers do.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 6. 
A class ____ network class is reserved for special purposes.
a.
A
c.
C
b.
B
d.
D
 

 7. 
In ____ addressing, only Class A, Class B, and Class C addresses are recognized.
a.
classful
c.
stateful
b.
subnet
d.
limited
 

 8. 
In classful addressing, the Class B IPv4 address network ID is located in the ____.
a.
last 8 bits
c.
first 8 bits
b.
last 16 bits
d.
first 16 bits
 

 9. 
In classful addressing, Class C IPv4 address host information is located in the ____.
a.
last 8 bits
c.
first 8 bits
b.
last 16 bits
d.
first 16 bits
 

 10. 
Within a classful addressing subnet mask, the ____ bits indicate that corresponding bits in an IPv4 address contain network information.
a.
0
c.
first eight
b.
1
d.
last eight
 

 11. 
Within a classful addressing, ____ is the default subnet mask for a Class C address.
a.
255.255.255.255
c.
255.255.0.0
b.
255.255.255.0
d.
255.0.0.0
 

 12. 
The result from ANDing 11001111 with 10010001 is ____.
a.
11001111
c.
10000001
b.
10010001
d.
00000001
 

 13. 
When using classful IPv4 addressing, a network ID always ends with an octet of ____.
a.
0
c.
1
b.
00000000
d.
255
 

 14. 
Because the octets equal to 0 and 255 are ____, only the numbers 1 through 254 can be used for host information in an IPv4 address.
a.
unobtainable
c.
reserved
b.
out-of-range
d.
open for general use
 

 15. 
CIDR notation takes the form of the network ID followed by a(n) ____, followed by the number of bits that are used for the extended network prefix.
a.
dash ( - )
c.
backward slash ( \ )
b.
underscore ( _ )
d.
forward slash ( / )
 

 16. 
The ____ gateway is the gateway that first interprets its outbound requests to other subnets, and then interprets its inbound requests from other subnets.
a.
proxy
c.
Internet
b.
core
d.
default
 

 17. 
The gateways that make up the Internet backbone are called ____ gateways.
a.
proxy
c.
Internet
b.
core
d.
default
 

 18. 
An example of a popular mail server is ____.
a.
Eudora
c.
AOL mail
b.
Microsoft Outlook
d.
Microsoft Exchange Server
 

 19. 
An example of a popular client email software is ____.
a.
MIME
c.
Sendmail
b.
Microsoft Outlook
d.
Microsoft Exchange Server
 

 20. 
SMTP operates from port ____.
a.
25
c.
110
b.
11
d.
250
 

 21. 
The standard message format specified by SMTP allows for lines that contain no more than ____ ASCII characters.
a.
100
c.
10,000
b.
1000
d.
1,000,000
 

 22. 
POP3 (Post Office Protocol, version 3) relies on TCP and operates over port ____.
a.
25
c.
110
b.
11
d.
250
 

 23. 
IMAP (Internet Message Access Protocol) is a mail retrieval protocol that was developed as a more sophisticated alternative to ____.
a.
POP3
c.
SMTP
b.
POP
d.
MIME
 

 24. 
An administrator can discover the host name assigned to a client by using the ____ utility.
a.
host
c.
hostname
b.
nbstat
d.
nslookup
 

 25. 
A program similar to mtr, ____, is available as a command-line utility in Windows XP, Vista, Server 2003, and Server 2008.
a.
nbstat
c.
dig
b.
pathping
d.
route
 

 26. 
The ____ utility allows you to view a host’s routing table.
a.
nbstat
c.
dig
b.
pathping
d.
route
 



 
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