DNS

Question 1

TCP is used for DNS messages greater than [size].

Answer 1

512 bytes

Question 2

[…] is used for DNS messages greater than 512 bytes.

Answer 2

TCP

Question 3

Standard DNS queries/responses typically use [TCP/UDP].

Answer 3

UDP

Question 4

DNS ‘AAAA’ records map names to […] addresses.

Answer 4

IPv6

Question 5

DNS ‘[…]’ records map names to IPv6 addresses.

Answer 5

AAAA

Question 6

DNS ‘A’ records map names to […] addresses.

Answer 6

IPv4

Question 7

DNS ‘[…]’ records map names to IPv4 addresses.

Answer 7

A

Question 8

Display the router’s host table:
R1# […]

Answer 8

show hosts

Question 9

Configure the domain of the router.
R1(config)# […]

Answer 9

ip domain name domain-name
(old version: ip domain-name domain-name)

Question 10

Enable the router to perform DNS queries. (enable by default)
R1(config)# […]

Answer 10

ip domain lookup
(old version: ip domain-lookup)

Question 11

Configure the DNS server the router will send DNS queries to.
R1(config)# […]

Answer 11

ip name-server ip-address

Question 12

Configure an entry in the router’s host table.
R1(config)# […]

Answer 12

ip host hostname ip-address

Question 13

Configure the router to act as a DNS server.
R1(config)# […]

Answer 13

ip dns server

Question 14

(Windows) Ping the specified address, specifying the number of pings to send.
> […]

Answer 14

ping ip-address -n number

Question 15

(Windows) Clear the DNS cache.
> […]

Answer 15

ipconfig /flushdns

Question 16

(Windows) Show the DNS cache.
> […]

Answer 16

ipconfig /displaydns

Question 17

(Windows) Show detailed IP configuration information.
> […]

Answer 17

ipconfig /all

Question 18

(Windows) Show basic IP configuration information.
> […]

Answer 18

ipconfig

Question 19

Hosts can automatically learn the address of the DNS server via [protocol].

Answer 19

DHCP

Question 20

What does DNS stand for?

Answer 20

Domain Name System