Exam 11: Domain Name System

The local DNS server forwards requests for unknown hostnames to a(n) ____________________, which is a type of DNS server.

The goal of DNS is to centralize administration.

The default time-to-live (TTL) value is typically one ____.

When creating an ACL, the IP address must be enclosed by braces and end with a ____.

Within the forwarder declaration /etc/named.conf file, what symbol represents a commented line?

DNS is a distributed and ____ database that allows controlling DNS management locally.

What top-level domain would the FBI typically use?

Describe a slave name server and explain its purpose.

Discuss how a zone files negative TTL entry is used.

Match each statement with an item -Maintains a copy of the master zone file that's used as a backup.

By default, openSUSE specifies /var/lib/named as the name server's working directory.

Describe a zone file serial number entry.

Match each statement with an item -A resource record containing basic information about a zone.

Centrally controlled ____ DNS servers are known as root DNS servers.

Match each statement with an item -An authoritative name server that stores the primary copies of zone records.

How do you install BIND?

The zone file ____ entry specifies how often slave name servers check the serial number to see whether the zone file has changed.

The main BIND DNS configuration file, named.conf, is in the /etc directory.

A(n) ____________________ is a central database that translates names to IP addresses (or IP addresses to names).

Match each statement with an item -Used to resolve a hostname to an IPv4 address for locating a resource.