Practice Test 7

Question 1

What DNS database record returns a 32-bit IP address?

Answer 1

“A”

Question 2

The DNS database AAAA record creates a pointer that maps a hostname to a what?

Answer 2

An IPv6 address

Question 3

What DNS database record returns a domain name to a list of mail servers for that domain?

Answer 3

MX

Question 4

What is the function of a DNS TXT record?

Answer 4

Provides outside services with additional information about a domain, but not used to direct any traffic

Question 5

What DNS TXT records are used for spam management?

Answer 5

SPF, DKIM and DMARC

Question 6

What DNS TXT records allow the receiver of an email message to verify that the message claimed to have come from a specific domain was indeed authorized by the owner of that domain?

Answer 6

DKIM

(DomainKeys Identified Mail)

Question 7

What refers to an open standard defining a technical method to prevent electronic mail sender address forgery?

Answer 7

SPF

(Sender Policy Framework)

Question 8

What refers to a DNS TXT record that allows the owner of a domain to specify all the servers authorized to send mail from their domain?

Answer 8

SPF

Question 9

What refers to a DNS TXT record containing instructions for the recipient of an email message on how to handle emails that do not align with the sender’s mail policies?

Answer 9

DMARC

(Domain-based Message Authentication, Reporting and Conformance)

Question 10

The time a DHCP client can use an IP address dynamically assigned by the DHCP server is referred to as what?

Answer 10

The “Lease”

Question 11

What are the characteristic features of satellite Internet connections?

Answer 11

Relatively high cost in comparison to terrestrial links, Interference (line-of-sight / weather dependent), Lack of signal interference

Question 12

What is the most common type of DSL Internet access?

Answer 12

ADSL

Question 13

An ISP offering Internet access to subscribers at a designated wireless hotspot is known as a what?

Answer 13

WISP