CH 9: (Part 1) TCP/IP Internetworking II

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

64

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

ae00:00ff:feff:ff0

Corporations wish to have ________ domain names.

second-level

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

domain

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

4 bits

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

8

Which of the following is a private IP address range?

10.x.x.x

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

14

Which is a type of top-level domain?

generic TLD

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

128.171.x.x

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

32 bits

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

8

Companies get second-level domains from ________.

domain registrars

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

firewall

".com" is a ________.

top-level domain

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

254

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

254

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

254

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

48 bits

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

A) allows a firm to have more internal IP addresses

The DNS ________ record is for the host name's ________ address A) A; IPv4 B) A; IPv6 C) AAAA; IPv4 D) none of the above

A; IPv4

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

AAAA; IPv6

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

fffe

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

host part

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

multiple records

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

network

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

none of the above

NAT enhances security by ________.

preventing sniffers from learning internal IP addresses

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

subnet ID

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?

the local DNS server

".edu" is a ________.

top-level domain

________ is a general naming system for the Internet.

DNS

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

Extended Unique Identifier-64

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

False

NAT is transparent to all applications.

False

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

NAT

The highest-level DNS servers are called ________.

Root servers

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

C) both A and B

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

C) both A and B

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

C) both A and B

In a large company, you want ________.

as small a routing prefix as you can have

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

authoritative DNS server

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

interface ID


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