Deck 7: Support Services

Question 1

In manual allocation,IP addresses are assigned by DHCP _____.

A)automatically and forever,based on a first-come-first-serve basis,from a pool of addresses
B)manually and forever on a per-host basis
C)automatically and for a short period,based on a first-come-first-serve basis,from a pool of addresses
D)None of the above

Answer 1

B

Question 2

In most networks,hosts are assigned IP addresses _____.

A)manually
B)using DNS
C)using DHCP
D)using NAT

Answer 2

C

Question 3

Clients locate the DNS server on their network because _____.

A)the IP address of the DNS server is typically programmed into the computer
B)all computers on the network act as DNS servers
C)the client can typically act as its own DNS server
D)they obtain it using DHCP at boot time

Answer 3

D

Question 4

A limitation of network address translation is that _____.

A)it wastes IP addresses
B)it adds complexity to DNS
C)it cannot be used with RFC 1918 addresses
D)it cannot be used to assign IP addresses to servers

Question 5

Network address translation is the method of _____.

A)allocating IP addresses automatically
B)mapping IP addresses from one address block to another address block
C)translating host names to IP addresses
D)allocating IP address blocks to ISPs

Question 6

Manual allocation by DHCP is useful for _____.

A)client PCs
B)servers such as workstations
C)non-server networked devices such as printers
D)None of the above

Question 7

Non-routable addresses are useful because _____.

A)they enable IP address reuse
B)they enable automatic assignment of IP addresses
C)they enable translation of host names to IP addresses
D)they are reserved for academic use

Question 8

In dynamic allocation,IP addresses are assigned by DHCP _____.

A)automatically and forever,based on a first-come-first-serve basis,from a pool of addresses
B)manually and forever on a per-host basis
C)automatically and for a short period,based on a first-come-first-serve basis,from a pool of addresses
D)None of the above

Question 9

When a client wishes to translate the hostname www.example.com,it sends a translation request to _____.

A)the DNS server identified by DHCP
B)the DNS server responsible for the example.com domain
C)the DNS server responsible for all ".com" domains
D)any DNS server

Question 10

Network address translation is useful because it enables _____.

A)the automatic allocation of IP addresses
B)the translation of host names to IP addresses
C)IP address reuse
D)the allocation of IP address blocks to ISPs

Question 11

The administrator for the ".com" domain is responsible for knowing the IP address of _____.

A)www.example.com
B)example.com
C)example.edu
D)A and B

Question 12

In automatic allocation,IP addresses are assigned by DHCP _____.

A)automatically and forever,based on a first-come-first-serve basis,from a pool of addresses
B)manually and forever on a per-host basis
C)automatically and for a short period,based on a first-come-first-serve basis,from a pool of addresses
D)None of the above

Question 13

All of the following are RFC 1918 address blocks except _____.

A)10.0.0.0/ 8
B)172.16.0.0/ 16
C)192.168.0.0/ 16
D)118.7.8.0/ 24

Question 14

DNS is used to _____.

A)automate the allocation of IP addresses
B)enable IP address reuse
C)translate hostnames to IP addresses
D)define non-routable IP addresses

Question 15

Dynamic allocation by DHCP is useful for _____.

A)client PCs
B)servers such as workstations
C)non-server networked devices such as printers
D)None of the above

Question 16

DHCP _____.

A)automates the allocation of IP addresses
B)enables IP address reuse
C)translates hostnames to IP addresses
D)defines non-routable IP addresses

Question 17

When NAT is used in home networks,RFC 1918 addresses can be reused in neighboring homes _____.

Question 18

Address resolution protocol ARP)is used to _____.

A)automate the allocation of IP addresses
B)discover the MAC address of a host whose IP address is known
C)discover the IP address of a host whose MAC address is known
D)define non-routable IP addresses

Question 19

Clients locate the DHCP server on their network because _____.

A)the IP address of the DHCP server is typically programmed into the computer
B)the DHCP DISCOVER message sent by the computer is broadcast on the network
C)any computer on the network can act as a DHCP server
D)the client can act as its own DHCP server

Question 20

Non-routable addresses are also called _____.

A)useless addresses
B)experimental addresses
C)hobby addresses
D)RFC 1918 addresses

Question 21

___________ knows)the name to IP address mapping of all ".com" addresses.

A)The root name servers
B)The ".com" name servers
C)No single name server
D)The ".edu" name server

Question 22

DNS organizes the name to IP address mappings _____.

A)hierarchically
B)in a relational database table
C)in a central database located at the root name servers
D)in a spreadsheet

Question 23

The time-to-live for a DNS record specifies the _____.

A)the maximum number of hops allowed for a packet to reach the host
B)the mean number of hops allowed for a packet to reach the host
C)the time at which the host is expected to be taken down for maintenance
D)the duration for which the name to IP address mapping is expected to be valid

Question 24

In a typical home network,all computers in the home are assigned IP addresses _____.

A)from the ISP's allocated address pool
B)from the RFC 1918 address pool
C)from the home owner's preferred address pool
D)randomly

Question 25

In a typical home network,the router also acts as the _____.

A)DNS server
B)DHCP server
C)NAT device
D)All of the above