Deck 9: Network Services

Question 1

Cisco's DHCP server implementation prefers to save the IP configuration parameters it has sent to a particular host. These are called ____.

A) tokens
B) overlapping
C) bindings
D) enablings

Answer 1

C

Question 2

Static NAT must be used if you want clients outside your network to access services on your servers.

Answer 2

True

Question 3

The command to configure a DNS lookup on a Cisco router is ____.

A) ip domain-lookup
B) ip dns
C) ip name-server
D) ip dns-server

Answer 3

C

Question 4

DHCP is enabled by default in the Cisco IOS. If you want to make sure it is enabled, use the ____ command at the global configuration mode prompt.

A) dhcp on
B) enable dhcp
C) enable service dhcp
D) service dhcp

Question 5

The ____ command is optional, but provides a domain suffix for the names.

A) ip domain-name
B) ip suffix-name
C) ip domain-suffix
D) ip suffix

Question 6

____ uses a one-to-one mapping or one-to-many mapping method to allow one or more private IP clients to gain access to the Internet by mapping the private IP addresses to public IP addresses.

A) DHCP
B) NAT
C) WINS
D) NetBEUI

Question 7

The ____ command enables DNS if it has previously been disabled.

A) ip domain-lookup
B) domain-lookup on
C) ip name-server
D) ip dns enable

Question 8

____ is a popular and important naming service.

A) PAT
B) DNS
C) DHCP
D) NAT

Question 9

____ must be used if you want clients outside your network to access services on your servers.

A) Static NAT
B) Dynamic NAT
C) PAT
D) Dynamic PAT

Question 10

____ manages addressing by leasing the IP information to the hosts.

A) DNS
B) DHCP
C) WINS
D) DNCP

Question 11

Windows Internet Name Service (WINS) servers are not supported by Cisco routers.

Question 12

Cisco developed NAT, and today the technology is used by routers, firewalls, and even individual computers with multiple network connections.

Question 13

To differentiate between the connections, ____ uses multiple public TCP and UDP ports to create unique sockets that map to internal IP addresses.

A) PAT
B) static NAT
C) dynamic NAT
D) virtual NAT

Question 14

NAT is available in three forms: Static NAT, Dynamic NAT, and ____.

A) WINS
B) DHCP
C) PAT
D) IP-AT

Question 15

RARP and ____ servers issue IP configuration information based on a host's MAC address and require manual preconfiguration for each host.

A) WINS
B) DNS
C) BOOTP
D) NetBEUI

Question 16

You could turn off the lookup feature on a Cisco router by using the ____ command.

A) no domain-lookup
B) no ip domain-lookup
C) no ip domain
D) no ip lookup

Question 17

NAT servers use ____ to send connections from external clients to the Web server on the internal network.

A) nat relay
B) port forwarding
C) port relay
D) dhcp relay

Question 18

Most people prefer to use names, not IP addresses, when communicating with network devices.

Question 19

The overlapping problem cannot be solved using NAT because NAT hides the internal IP scheme.

Question 20

NAT is defined in RFC ____, which describes methods for connecting private (internal) IP addresses to the Internet.

A) 1022
B) 1133
C) 2145
D) 3022

Question 21

What are the steps for configuring dynamic NAT?

Question 22

Describe static NAT.

Question 23

The only difference between using SDM to configure dynamic NAT versus PAT is that in the ____ dialog box, you choose to translate to a single outside interface rather than a pool of addresses.

A) Select Translation Rule
B) Add Address Pool
C) Address Pool Rule
D) Add Address Translation Rule

Question 24

____________________ occurs when the internal network has been incorrectly configured for an IP range that actually exists on the Internet (registered to another entity) or when two companies merge and each company was using the same private IP address range.

Question 25

Describe dynamic NAT.

Question 26

When monitoring DHCP, the best way to check the bindings is to execute the ____ command on the router.

A) show binding
B) show ip dhcp
C) show ip domain-server
D) show ip dhcp binding

Question 27

____________________ is the simplest form of NAT, in which a single private IP address is mapped to a single public IP address.

Question 28

Describe the DHCP process.

Question 29

____________________ means that the NAT router automatically maps a group of valid local IP addresses to a group of Internet IP addresses, as needed.

Question 30

When you launch the SDM program, you see the Home tab. To see all of the parameters that can be configured, click the ____ button.

A) Configure
B) Options
C) Tools
D) Preferences

Question 31

By default, a Cisco router will try several times to find an IP address for a name if you enter one. This automatic translation is called a(n) ____________________.

Question 32

What are the steps for configuring port address translation?

Question 33

Briefly describe overlapping.

Question 34

Compare DHCP with RARP and BOOTP.

Question 35

For information on the specific DHCP address pool, use the ____ command.

A) show ip pool
B) show ip dhcp pool
C) show domain pool
D) show address pool

Question 36

What are the advantages of using private addressing with NAT?

Question 37

Regarding SDM, you access the DHCP configuration area using the ____ button.

A) DHCP Preferences
B) Additional Tasks
C) Additional Options
D) Services Tasks

Question 38

___________________________________ allows many home users, corporations, and organizations around the world to connect far more computers to the Internet than they would otherwise be able to connect.

Question 39

What are some of the disadvantages of NAT?

Question 40

You can point your router to a DNS server for name resolution simply by configuring the ____ command.

A) ip name-server
B) ip domain dns
C) ip dns-server
D) ip domain-server

Question 42

What are the steps for configuring DHCP?