Q.1 The domain name system is maintained by _______.
A. A single server
B. A single computer
C. Distributed database system
D. None of the above
Ans : Distributed database system
Q.2 How are the bits in an IPv6 address organized?
A. reverse lookup
B. canonical name (CNAME)
A. name records
B. into 8 16-bit groups
Ans : into 8 16-bit groups
Q.3 Which one of the following is not true?
A. Multiple hostnames may correspond to a single IP address
B. A single hostname may correspond to many IP addresses
A. A single hostname may correspond to a single IP address
B. None of the above
Ans : A single hostname may correspond to a single IP address
Q.4 What are the 3 strategies for updating DNS servers?
A. dynamic, read-write, and read-only
B. the Mail exchanger (MX) record
C. a unique, internet-usable IP address
D. in a highly-secure environment
Ans : dynamic, read-write, and read-only
Q.5 What is used to control DNS data replication scope?
A. application directory partitions
B. the Mail exchanger (MX) record
C. in the Start of Authority (SOA) record
D. in a highly-secure environment
Ans : application directory partitions
Q.6 What allows PNRP to support service naming?
A. the fact that a PNRP name includes potential payloads such as service function
B. a referral system that performs lookups based on data known by other systems
C. the process that DNS uses to remove records that have become stale
D. creating an alternate record or alias for an existing record
Ans : the fact that a PNRP name includes potential payloads such as service function
Q.7 How can PNRP names be protected from spoofing or poisoning?
A. in perimeter networks
B. in a highly-secure environment
C. with digital signatures
D. Pointer (PTR) records
Ans : with digital signatures
Q.8 What is used to control DNS data replication scope?
A. the Mail exchanger (MX) record
B. application directory partitions
C. in a highly-secure environment
D. in the Start of Authority (SOA) record
Ans : application directory partitions
Q.9 What is the most common record type in DNS?
A. Host (A) records
B. name records
C. None of the above
D. dnscmd.exe
Ans : Host (A) records
Q.10 For what purpose is the BIND root cache file used?
A. To prime the name server with the root server’s addresses
B. To provide zone files for authoritative servers
C. To serve as a configuration file for the name server
D. To serve as a zone file for the loopback address
Ans : To prime the name server with the root server’s addresses
