Chapter 9 Review

Which term is an original top-level domain name?

.mil

____________________ records are the equivalent of A records, but they are reserved for a newer type of IP addressing called IPv6.

AAAA

Which type of domain allows all of the domain controllers to be equal partners, such that any domain controller can take over if one domain controller fails?

Active Directory

Describe the two ways in which to configure a Domain Name System (DNS) server.

Basically, you choose to configure a DNS server to work in one of two ways: as an authoritative DNS server or as a cache-only DNS server. Authoritative DNS servers store IP addresses and FQDNs of systems for a particular domain or domains. Cache-only DNS servers are never the authoritative server for a domain. They are only used to talk to other DNS servers to resolve IP addresses for DNS clients. Then they cache the FQDN to speed up future lookups.

Windows leans heavily on __________.

DDNS

Briefly describe how DNS can be applied in a private intranet.

Don't think DNS is only for computers on the Internet. If you want to make your own little TCP/IP network using DNS, that is fine, although you will have to set up at least one DNS server as the root for your little private intranet. Every DNS server program can be configured as a root; just do not connect that DNS server to the Internet because it won't work outside your little network.

DNS domain names are required on a private TCP/IP network.

False

Because NetBIOS only handled host names, what protocol did Microsoft use support sharing folders and files?

Microsoft used another protocol called Server Message Block (SMB) that ran on top of NetBT to support sharing folders and files. SMB used NetBIOS names to support the sharing and access process. SMB is not dependent on NetBIOS and today runs by itself using TCP port 445.

Which characters are not permitted in a DNS domain or host name?

Spaces

What makes up the Domain Name System (DNS) root for the Internet?

The DNS root for the entire Internet consists of 13 powerful DNS server clusters scattered all over the world. They work as a team and are known collectively as the DNS root servers

Describe the UNIX/Linux DNS tool, domain information groper (dig).

The dig tool is very similar to nslookup, but it runs noninteractively. In nslookup, you are in the command until you type exit; nslookup even has its own prompt. The dig tool, on the other hand, is not interactive-you ask it a question, it answers the question, and it puts you back at a regular command prompt. When you run dig, you tend to get a large amount of information.

Which statement is true about DNS root servers?

They delegate name resolution to other DNS servers.

Every DNS forward lookup zone will have one SOA and at least one NS record.

True

Every forward lookup zone requires a Start of Authority (SOA) record.

True

Windows Server also has a Windows-only type of forward lookup zone called a(n) ____________________-integrated zone.

active directory

Cache-only DNS servers are often the authoritative server for a domain.

false

Every Web server must include "www" as part of its name.

false

Routers forward broadcast messages to other networks.

false

On an authoritative DNS server, which storage areas hold the IP addresses and FQDNs for the computers in a domain?

forward lookup zones

Which zone files are the most important part of any DNS server?

forward lookup zones

You can see your current DNS server settings in Windows by typing ____________________ at the command prompt.

ipconfig /all

Which command is used to force a DNS server to update its records?

ipconfig /registerdns

Every Fully Qualified Domain Name (FQDN) will always have a(n) __________ on the end to signify the root.

period (.)

One of the first signs of a DNS problem is usually a(n) "____________________" error message.

server not found

Names like .com, .net, or .gov are called ____________________ names.

top-level domain