CompTIA Network+ Practice Exam 10

Which of the following answers refer to the layers that can be found in the three-tiered datacenter network architecture model?

Core layer, Distribution/aggregation layer, Access/edge layer

Which of the following answers refers to network traffic within a data center, a.k.a. server-to-server traffic?

East-West

A forward DNS lookup zone returns a domain name for a given IP address.

False

A reverse DNS lookup zone is used for finding an IP address associated with a given domain name. (T or F)

False

A type of DNS query that returns either a valid address or a referral to another DNS server that may hold relevant information to the name resolution process is known as recursive query. (T or F)

False

In DNS, a type of query that returns either a valid address or a message indicating that the address cannot be found is known as iterative query. (T or F)

False

Which of the following DNS database records maps a domain name to a list of mail servers for that domain?

MX

DNS record that specifies a list of additional name servers on a domain is called:

NS

Which of the following answers refers to network traffic flowing into and out of a data center?

North-South

Which of the following statements describing the function of a DNS PTR record are true?

PTR record resolves an IP address to a hostname for reverse lookups, The functionality provided by a PTR record is the opposite of A and AAAA DNS records

A type of cloud infrastructure available solely for a single organization is known as:

Private cloud

What is the function of a DNS TXT record?

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

Which of the following answers refers to a cloud computing delivery model in which the cloud infrastructure is provisioned for open use by the general public?

Public cloud

A dedicated local network consisting of devices providing data access is called:

SAN

FCoE, Fibre Channel, and iSCSI are connection types used in:

SAN

Which of the answers listed below refers to a technology designed to simplify network infrastructure management?

SDN

A DNS record that stores administrative information about a domain or zone is known as:

SOA

Which DNS record specifies a host and port information that allow to find specific services on a network?

SRV

The answers below have been arranged to represent the DNS hierarchy from the highest level of the DNS tree (1) to the lowest level (5). Which of these answers are out of order?

Subdomain (e.g. "department" in "department.example.com"), Second level domain (e.g. "example.com")

Which of the following defines how long DNS settings are stored in cache before they are updated?

TTL

A cloud delivery model consisting of two or more interlinked cloud infrastructures (private, community, or public) is referred to as a hybrid cloud. (T or F)

True

In DNS, an authoritative name server is a server that stores DNS record information (it is the actual server that answers DNS queries). A recursive DNS server does not hold any DNS records; it tracks down the IP address for a given hostname by communicating with other DNS servers (acts as an intermediary between a web client sending the DNS query and the authoritative name server). (T or F)

True

In NTP, stratum 0 denotes highest accuracy of the time source (i.e. the reference clock). (T or F)

True

The term "DNS zone transfer" is used to describe the process of copying the contents of a DNS database stored on a primary DNS server to the secondary DNS servers. (T or F)

True

Which of the following answers refer to the characteristics of the spine-and-leaf datacenter network architecture model?

Two-tier architecture, Full mesh topology