Network+ chapter 9

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How does NetBIOS identify a computer system on the network?

By using a NetBIOS name

Which DNS server is used to talk to other DNS servers to resolve IP addresses for DNS clients?

Cache-only DNS server

Which of the following is true of the names in a flat name space?

Names must be unique.

What enables a system to determine an FQDN by knowing the IP address?

Reverse lookup zones

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

period (.)

Which tool is the best choice for testing DNS?

ping

DNS domains that are not on the Internet should use the top-level name __________.

.local

Which term is an original top-level domain name?

.mil

What is the network ID of 120.50.60.0 /19?

120.50.0.0

How many powerful DNS server clusters, scattered all over the world, does the DNS root contain?

13

Which of the following is a private IP address?

172.30.99.8

Including the separating periods, what is the maximum number of characters allowed by the DNS naming convention?

255

What is the increment of 120.50.60.0 /19?

32

What UDP port do DNS servers primarily use?

53

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

Windows leans heavily on __________ to build DNS records from other DNS servers.

DDNS

Which term refers to an authentication and authorization protocol designed to prevent bad guys from impersonating legitimate DNS servers?

DNSSEC

Which protocol enables DNS servers to get automatic updates of IP addresses of computers in their forward lookup zones, mainly by talking to the local DHCP server?

Dynamic DNS

A Windows domain is the same as a DNS domain.

False

A single DNS server can act as the authoritative name server for only one domain.

False

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

False

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

False

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

False

If a primary DNS server goes down, the secondary servers can resolve FQDNs and add new records.

False

In an Active Directory-integrated zone, the whole DNS system is reliant on a single DNS server.

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

What term best describes the way the DNS name space is organized?

Hierarchical

In the DNS naming convention, what is the correct sequence for writing a fully qualified domain name (FQDN)?

Host.domain.root

Which organization has the authority to create new top-level domain names?

ICANN

In the DNS naming convention, what character(s) separate(s) a domain name from its subdomains?

Period (.)

Which of the following would confirm that you have a DNS problem?

Ping works with the IP address but not with the Web site name.

Microsoft has used DNS names with the __________ protocol to provide folder and printer sharing in small TCP/IP networks.

SMB

Which record type defines the primary name server in charge of the forward lookup zone?

SOA

Which zone is created on other DNS servers to act as backups to the primary zone?

Secondary

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

Spaces

What information is kept in the cached lookups folder for a DNS server?

The IP addresses already resolved

Which statement is true about DNS root servers?

They delegate name resolution to other DNS servers.

Within the DNS hierarchy, which term refers to the DNS servers just below the DNS root?

Top-level domain servers

A zone is a container for a single domain that gets filled with records.

True

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

Lots of operating systems come with built-in DNS server software, including Windows Server.

True

The power of DNS comes from its incredible flexibility.

True

The second level of a domain name is the name of the individual entity registering the domain name.

True

A(n) ____________________ is a group of computers controlled by a computer running Windows Server.

Windows domain

In comparing the DNS name space to a computer's file system, a domain is like __________.

a folder

What entry is made at the command prompt in UNIX/Linux to display DNS server information?

cat /etc/resolv.conf

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

ipconfig /registerdns


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