SIMULATION According to the configuration below, what is the e-mail address of the administrator for this domain? $TTL 86400 $ORIGIN example.com @ IN SOA mars.example.com hostmaster.example.com( 2005020801 10800 3600 604800 86400 )

Which of these tools can provide the most information about DNS queries? A. dig B. nslookup C. host D. named-checkconf E. named-checkzone

Some users are unable to connect to specific local hosts by name, while accessing hosts in other zones works as expected. Given that the hosts are reachable by their IP addresses, which is the default log file that could provide…

DNSSEC is used for? A. Encrypted DNS queries between nameservers. B. Cryptographic authentication of DNS zones. C. Secondary DNS queries for local zones. D. Defining a secure DNS section. E. Querying a secure DNS section.

If the command arp -f is run, which file will be read by default? A. /etc/hosts B. /etc/ethers C. /etc/arp.conf D. /etc/networks E. /var/cache/arp

According to the BIND configuration file below, which of the following is true? A. Any host from any network may use this server as its main DNS server B. If the server doesn’t know the answer to a query, it…

SIMULATION Running tcpdump -nli eth1 icmp shows the following output: What command, without options, parameters or arguments, was used on the host 192.168.123.5 to generate this output?

The mailserver is currently called fred, while the primary MX record points to mailhost.example.org. What must be done to direct example.org email towards fred? A. Add an A record for mailhost to fred’s IP address. B. Add a CNAME record…

Which of these ways can be used to only allow access to a DNS server from specified networks/hosts? A. Using the limit{…;};statement in the named configuration file. B. Using the allow-query{…;};statement in the named configuration file. C. Using the answer…

SIMULATION Using only commands included with named, what is the command, with options or parameters, to make named re-read its zone files?