Deck 9: Tcpip Internetworking 2

Question 1

NAT works automatically with all protocols.

Answer 1

False

Question 2

In NAT,the ________ creates new external source IP addresses and port numbers.

A)router
B)firewall
C)source host
D)destination host

Answer 2

B

Question 3

Which of the following can be used within a firm?

A)private IP addresses
B)public IP addresses
C)both A and B
D)neither A nor B

Answer 3

C

Question 4

When the subnet part is made larger,the host part must be smaller.

Question 5

________ is the processing of presenting external IP addresses that are different from internal IP addresses used within the firm.

A)DNS
B)NAT
C)DHCP
D)None of the above

Question 6

NAT can multiply the number of IP addresses available to the firm by over a thousand.

Question 7

In DNS,a group of resources under the control of an organization is called a ________.

A)network
B)subnet
C)scope
D)domain

Question 8

________ is a general naming system for the Internet.

A)NAT
B)DNS
C)Both A and B
D)Neither A nor B

Question 9

In IP subnet planning,having a large subnet part allows more hosts per subnet.

Question 10

NAT operates transparently to the two hosts.

Question 11

The domain name system ________.

A)is a way to find a host's IP addresses if your computer only knows the host's host name
B)is a general naming system for the Internet
C)both A and B
D)neither A nor B

Question 12

If your subnet part is 8 bits long,you can have ________ subnets.

A)64
B)128
C)256
D)none of the above

Question 13

NAT provides security.

Question 14

You have a 20-bit network part and a 4-bit subnet part.How many hosts can you have per subnet?

A)14
B)16
C)254
D)none of the above

Question 15

Which of the following is a private IP address range?

A)10.x.x.x
B)128.171.x.x
C)both A and B
D)neither A nor B

Question 16

NAT enhances security by preventing ________.

A)sniffers from learning internal IP addresses
B)encryption
C)both A and B
D)neither A nor B

Question 17

Private IP address ranges are only used within a firm.

Question 18

Which of the following is true about NAT?

A)it can enhance security
B)it presents problems for some protocols
C)both A and B
D)neither A nor B

Question 19

Your firm has an 8-bit network part and an 8-bit subnet part.How many hosts can you have?

A)8
B)16
C)254
D)65,534

Question 20

In IP subnet planning,you need to have at least 130 subnets.How large should your subnet part be?

A)6
B)7
C)8
D)none of the above

Question 21

".edu" is a ________.

A)root domain
B)top-level domain
C)second-level domain
D)none of the above

Question 22

Clients can send a DHCP request message to multiple DHCP servers.

Question 23

Servers have static IP addresses so that clients can find them.

Question 24

Corporations most wish to have ________ domain names.

A)top-level
B)second-level
C)third-level
D)none of the above

Question 25

Which of the following are usually given dynamic IP addresses?

A)clients
B)servers
C)both A and B
D)neither A nor B

Question 26

Clients normally get their IP addresses from ________.

A)DNS servers
B)DHCP servers
C)directory servers
D)identity servers

Question 27

".com" is a ________.

A)root domain
B)top-level domain
C)second-level domain
D)none of the above

Question 28

The highest-level DNS servers are called ________.

A)root servers
B)top-level servers
C)both A and B
D)neither A nor B

Question 29

Which of the above is NOT an element in a network management system?

A)the manager
B)agents
C)objects
D)All of the above ARE elements in network management systems.

Question 30

In the Domain Name System,there is a single root server.

Question 31

________ servers provide ________ IP addresses to clients.

A)DNS, static
B)DNS, dynamic
C)DHCP, static
D)DHCP, dynamic

Question 32

In SNMP,the manager communicates directly with the managed device.

Question 33

In SNMP,the manager communicates directly with a(n)________.

A)managed device
B)agent
C)both A and B
D)neither A nor B

Question 34

Servers are normally given dynamic IP addresses.

Question 35

".edu" is a generic top-level domain.

Question 36

A company receives its domain name from ________.

A)the IETF
B)its ISP
C)a domain registrar
D)none of the above

Question 37

DHCP ________ are configurable parameters that determine which subnets the DHCP server will serve.

A)ranges
B)scopes
C)spans
D)domains

Question 38

".UK" is a generic top-level domain.

Question 39

Servers are normally given ________ IP addresses.

A)well-known
B)static
C)dynamic
D)none of the above

Question 40

How many DNS root servers are there?

A)1
B)2
C)10
D)13

Question 41

In SNMP,Set commands tell the agent to change a parameter on the managed device.

Question 42

SNMPv3 uses ________ for authentication.

A)community names
B)digital certificates and digital signatures
C)a different password for each manager-agent pair
D)all of the above

Question 43

Which of the following would be an SNMP object?

A)number of rows in routing table
B)system uptime (since last reboot)
C)both A and B
D)neither A nor B

Question 44

In SNMP,the manager creates both commands and responses.

Question 45

In SNMP,"object" is another name for "managed device."

Question 46

SNMPv1 uses ________ for authentication.

A)community names
B)digital certificates and digital signatures
C)a different password for each manager-agent pair
D)all of the above

Question 47

In MPLS,the packet travels along the ________.

A)route
B)data link
C)label-switched path
D)MPLS path

Question 48

In MPLS,the interface to send the packet back out will be decided ________.

A)during the router's routing process
B)before the packet arrives
C)by a dynamic routing protocol
D)none of the above

Question 49

In SNMP,the agent can create commands.

Question 50

A(n)________ is a message sent by an agent to let the manager know about a condition the agent has detected.Select the name used in the SNMP standard.

A)command
B)trap
C)alarm
D)all of the above

Question 51

In SNMP,the time-to-live value for a router interface is the value for an object.

Question 52

In SNMP,the ________ creates commands.

A)manager
B)agent
C)both A and B
D)neither A nor B

Question 53

Human interface functionality is defined by the SNMP standard.

Question 54

MPLS routers base their decisions on a packet's ________.

A)destination IP address
B)label number
C)both A and B
D)neither A nor B

Question 55

In SNMP,the ________ creates responses.

A)manager
B)agent
C)both A and B
D)neither A nor B

Question 56

In SNMP,companies are often reluctant to use ________ commands because of security dangers.

A)Get
B)Set
C)trap
D)request

Question 57

Label-switching routers do NOT look at the IP address of an arriving packet.

Question 58

In SNMP,the ________ creates traps.

A)manager
B)agent
C)both A and B
D)neither A nor B

Question 59

The management information base (MI
B)is a(n)________.

A)database schema
B)actual database
C)Either A or B
D)neither A nor B

Question 60

In SNMP,the manager creates ________.

A)traps
B)GET commands
C)both A and B
D)neither A nor B

Question 61

Which is less expensive to implement?

A)SSL/TLS
B)IPsec
C)Both cost about the same to implement.

Question 62

In tunnel mode,IPsec provides protection ________.

A)all the way between the two hosts
B)only between the IPsec servers
C)both A and B
D)neither A nor B

Question 63

IPsec is used for site-to-site VPNs.

Question 64

In MPLS,the ________ adds the label to the packet.

A)source host
B)first label-switching router
C)both A and B
D)neither A nor B

Question 65

IPsec operates at the data link layer.

Question 66

In transport mode,IPsec provides security over the internal networks.

Question 67

In tunnel mode,IPsec provides protection all the way between the two hosts.

Question 68

In tunnel mode,IPsec provides protection ________.

A)all the way between the two hosts
B)only between the IPsec servers
C)both A and B
D)neither A nor B

Question 69

To be protected by IPsec,applications must be IPsec-aware.

Question 70

Which of the following standards permits central management?

A)IPsec
B)SSL/TLS
C)both A and B
D)neither A nor B

Question 71

Label-switching routers bring ________.

A)lower cost
B)the ability to do traffic engineering
C)both A and B
D)neither A nor B

Question 72

IPsec protects all layers above the internet layer.

Question 73

Client PCs must have digital certificates in ________.

A)transport mode
B)tunnel mode
C)both A and B
D)neither A nor B

Question 74

Which mode of IPsec is more expensive?

A)transport mode
B)tunnel mode
C)Both A and B are equally expensive.

Question 75

IPsec is used for ________ VPNs.

A)remote-access
B)site-to-site
C)both A and B
D)neither A nor B

Question 76

IPsec is a(n)________ layer standard.

A)physical
B)data link
C)internet
D)all of the above

Question 77

The main limit of IPsec tunnel mode protection compared to transport mode protection in IPsec is ________.

A)protection over only part of the route
B)higher cost
C)both A and B
D)neither A nor B

Question 78

The main disadvantage of transport mode protection compared to tunnel mode protection in IP is ________.

A)that it provides protection over only part of the route
B)higher cost
C)both A and B
D)neither A nor B

Question 79

In IPsec,agreements about how security will be done are called ________.

A)tranches
B)security contracts
C)service-level agreements
D)security associations

Question 80

IPsec protects ________ layer messages.

A)data link
B)application
C)both A and B
D)neither A nor B