Deck 9: TCP/IP Internetworking II

Question 1

The routing prefix in IPv6 is like the ________ part in an IPv4 address.

A) network
B) subnet
C) host
D) both A and B

Answer 1

A

Question 2

The part of an IPv6 global unicast address that designates the host is called the ________.

A) host part
B) interface ID
C) routing prefix
D) none of the above

Answer 2

B

Question 3

Your firm has an 8-bit network part.If you need at least 200 subnets,what must your subnet part size be?

A) 5
B) 6
C) 7
D) 8

Answer 3

D

Question 4

Your firm has a 22-bit network part.What subnet part would you select to give at least 10 subnets?

A) 2 bits
B) 3 bits
C) 4 bits
D) none of the above

Question 5

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

A) 15
B) 16
C) 254
D) none of the above

Question 6

In an IPv6 global unicast address,the interface ID is ________ bits long.

A) 8
B) 16
C) 64
D) Its size varies.

Question 7

A step in creating an EUI-64 is dividing a 48-bit MAC address in half and inserting ________ in the center.

A) the interface ID
B) the subnet ID
C) fffe
D) 0000

Question 8

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

A) 64
B) 128
C) 256
D) 254

Question 9

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 10

What field in an IPv6 global unicast address corresponds to the subnet part of an IPv4 address?

A) global routing prefix
B) subnet ID
C) interface ID
D) none of the above

Question 11

Your subnet part is 8 bits long.How many hosts can you have per subnet?

A) 8
B) 14
C) 254
D) none of the above

Question 12

The IEEE calls a 64-bit interface addresses that it designed a(n)________ address.

A) Extended Unique Identifier-64
B) Interface ID
C) MAC address
D) IP address

Question 13

If your subnet part is 7 bits long,how many subnets can you have?

A) 128
B) 256
C) 512
D) none of the above

Question 14

If the subnet ID in an IPv6 address is 32 bits,how long is the routing prefix?

A) 16 bits
B) 32 bits
C) 64 bits
D) none of the above

Question 15

________ is the process 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 16

Your firm has a 22-bit network part and a 6-bit subnet part.How many hosts can you have per subnet?

A) 6
B) 8
C) 14
D) none of the above

Question 17

Which is NOT one of the three parts of a public IPv6 unicast address?

A) subnet ID
B) routing prefix
C) host part
D) All of the above are parts in a public IPv6 unicast address.

Question 18

Convert the following EUI-48 address to a modified EUI-64 address: AA-00-00-FF-FF-00.

A) aa00:ff:feff:ff0
B) ae00:ff:feff:ff0
C) aa00:00ff:feff:ff0
D) ae00:00ff:feff:ff0

Question 19

In a large company,you want ________.

A) as big a routing prefix as you can have
B) a medium-size routing prefix
C) as small a routing prefix as you can have
D) The size of the routing prefix is of no importance.

Question 20

If your routing prefix is 16 bits,how long is your subnet ID?

A) 16 bits
B) 32 bits
C) 48 bits
D) not possible to caculate

Question 21

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 22

For an internal client to use NAT to communicate with an external webserver,the client must be configured to do so.

Question 23

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

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

Question 24

Companies get second-level domains from ________.

A) the IETF
B) domain registrars
C) the Internet Society
D) the United States Government

Question 25

If the local DNS server does not know an IP address and must contact a remote DNS server,which DNS server will return the response to the client?

A) the local DNS server
B) the remote DNS server
C) either A or B
D) No IP address will be returned to the client.

Question 26

".com" is a ________.

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

Question 27

NAT is transparent to all applications.

Question 28

Which is a type of top-level domain?

A) generic TLD
B) specific TLD
C) both A and B
D) neither A nor B

Question 29

NAT ________.

A) allows a firm to have more internal IP addresses
B) provides some security
C) both A and B
D) neither A nor B

Question 30

NAT enhances security by ________.

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

Question 31

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 32

A company has a domain name.What else must it have before it can make a website available to the public?

A) a DNS server to host its domain name
B) the website itself
C) both A and B
D) neither A nor B

Question 33

If your local DNS server does not know the host name of an IP address,it will get the address from a(n)________.

A) root DNS server
B) proxy DNS server
C) authoritative DNS server
D) none of the above

Question 34

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

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

Question 35

________ is a general naming system for the Internet.

A) NAT
B) DNS
C) DHCP
D) Dotted decimal notation

Question 36

Which of the following IPv4 addresses would be used for Internet transmission?

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

Question 37

".edu" is a ________.

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

Question 38

NAT ________.

A) allows a firm to have more internal IP addresses
B) reduces cost
C) both A and B
D) neither A nor B

Question 39

The highest-level DNS servers are called ________.

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

Question 40

Corporations wish to have ________ domain names.

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

Question 41

For a particular domain name,a DNS server will have ________.

A) a single record
B) multiple records
C) two records-one for IPv4 and one for IPv6.
D) all of the above

Question 42

A DHCP server provides a client with ________.

A) one or more IP addresses for it to use
B) the IP address of one or more DNS servers
C) both A and B
D) neither A nor B

Question 43

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

A) managed device
B) agent
C) object
D) access point

Question 44

Which of the following can route non-IP packets?

A) OSPF
B) EIGRP
C) both A and B
D) neither A nor B

Question 45

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

A) Get
B) Set
C) Trap
D) Request

Question 46

Which of the following would be an SNMP object?

A) number of rows in routing table
B) a managed switch
C) both A and B
D) neither A nor B

Question 47

Good security is an enabler if a company wishes to use SNMP ________ commands.

A) Get
B) Set
C) Trap
D) Reset

Question 48

In the Border Gateway Protocol,"gateway" means ________.

A) firewall
B) switch
C) router
D) none of the above

Question 49

The DNS ________ record is for the host name's ________ address

A) AAAA; IPv4
B) AAAA; IPv6
C) both A and B
D) neither A nor B

Question 50

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 51

You need to use EIGRP if ________.

A) you have TCP/IP traffic exclusively
B) some of your traffic is TCP/IP traffic
C) both A and B

Question 52

The DNS ________ record is for the host name's ________ address

A) A; IPv4
B) A; IPv6
C) AAAA; IPv4
D) none of the above

Question 53

The almost-universal exterior dynamic routing protocol is ________.

A) EIGRP
B) OSPF
C) both A and B
D) neither A nor B

Question 54

________ is an interior dynamic routing protocol.

A) OSPF
B) BGP
C) both A and B
D) neither A nor B

Question 55

Dynamic ________ protocols allow routers to transmit routing table information to one another.

A) routing
B) transport
C) synchronization
D) none of the above

Question 56

Which of the following would be an SNMP interface object?

A) number of rows in routing table
B) whether the interface is undergoing testing
C) both A and B
D) neither A nor B

Question 57

A company is free to select whatever ________ dynamic routing protocol it wishes.

A) interior
B) exterior
C) both A and B
D) neither A nor B

Question 58

An advantage of using DHCP to configure clients is that ________.

A) the configuration information will be up-to-date
B) the configuration will be done securely
C) both A and B
D) neither A nor B

Question 59

ICMP is used for ________.

A) error messages
B) configuration messages
C) routing messages
D) none of the above

Question 60

A company is free to select its ________.

A) interior dynamic routing protocol
B) exterior dynamic routing protocol
C) both A and B
D) neither A nor B

Question 61

IPsec protects ________ layer content.

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

Question 62

In remote access VPNs,IPsec has an ________ at the corporate site.

A) IPsec firewall
B) IPsec gateway
C) IPsec proxy server
D) IPsec endpoint

Question 63

The SA is negotiated in the ________.

A) IKE phase
B) IPsec protection phase
C) AES phase
D) none of the above

Question 64

SA protections are applied in the ________.

A) IKE phase
B) IPsec protection
C) AES
D) none of the above

Question 65

In tunnel mode,ESP fields surround an IPv4 packet's ________.

A) entire length
B) header
C) data field
D) none of the above

Question 66

Ping is for ________ messages.

A) error advisory
B) supervisory
C) both A and B

Question 67

SAs in two directions ________.

A) are always the same
B) are always different
C) are sometimes different

Question 68

Which has stronger security?

A) SSL/TLS
B) IPsec
C) Both have about equal security.

Question 69

IPsec is used for ________ VPNs.

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

Question 70

The first stage of IPsec uses the ________ protocol.

A) SSL/TLS
B) AES
C) IKE
D) SHA

Question 71

Which of the following is more widely used?

A) ESP
B) AH
C) Both are about equally widely used.

Question 72

Which protects more of the original IP packet?

A) transport mode
B) tunnel mode
C) Both provide the same protection to the IP packet.

Question 73

Options for major cryptographic methods are sometimes unacceptably weak and must be prohibited.

Question 74

Which of the following is used in ESP?

A) ESP header
B) ESP trailer
C) Integrity check value
D) all of the above

Question 75

In transport mode,ESP fields surround an IPv4 packet's ________.

A) entire length
B) header
C) data field
D) none of the above

Question 76

In IPv6,ESP protects the IP packet's_____.

A) entire length
B) payload
C) header
D) none of the above

Question 77

SLAs define ________.

A) cryptographic methods
B) cryptographic options
C) both A and B
D) neither A nor B

Question 78

What security concern do ICMP echo request messages and echo response messages bring?

A) attackers can disable the other host
B) attackers can learn that the other host's IP address is in use
C) attackers can change the other host's IP address
D) all of the above.

Question 79

Pinging is to send ICMP ________ messages to the target host.

A) echo request
B) error advisement
C) ping
D) echo

Question 80

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

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