Network+ chapter 9
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
