Windows Server 2012 R2 (Chp 11-12)

Front 1

Before a DHCP server can hand out addresses, which of the following steps must be completed?

Back 1

DHCP scope must be created and activated.

The DHCP server must be created and authorized.

Front 2

DHCP standards define multiple methods to allocate IP addresses. What are they?

Back 2

Dynamic, automatic, and manual

Front 3

During DHCP lease negotiation, what happens if the client requests an IP address from the server but the server has already assigned the offered IP address?

Back 3

The server responds with a DHCPNAK message to the client.

Front 4

For DHCP address allocation, by how much is network traffic reduced related to periodic lease renewal messages when switching from dynamic allocation to automatic allocation?

Back 4

100 percent because dynamic address allocation requires periodic lease renewal messages whereas automatic does not

Front 5

How are DHCP settings labeled in a Windows computer's network interface?

Back 5

Obtain an IP address automatically

Front 6

How do DHCP servers respond to a DHCPDISCOVER message?

Back 6

DHCPOFFER

Front 7

How does DHCP scope creation differ in Windows Server 2012 and Windows Server 2012 R2 compared to prior Windows Server versions?

Back 7

In Windows Server 2012 R2, creating the scope is done separately, after adding the DHCP Server role.

Front 8

How does a DHCP client communicate which offered IP address it will accept from which DHCP server?

Back 8

The client sends a DHCPREQUEST message to all servers with the IP address of the chosen DHCP server.

Front 9

How far into the lease period does a DHCP client begin requesting renewal of the IP address?

Back 9

50 percent, or at 4 days into the lease

Front 10

To make use of Pre-boot Execution Environment (PXE) and Windows Deployment Services (WDS), what special configuration do you need on the server and client?

Back 10

The DHCP server on the network must have a custom PXEClient option (option 60) configured with the location of the WDS server on the network.

Front 11

What are the advantages of using a distributed DHCP infrastructure?

Back 11

All the client/server network traffic is local, so minimal DHCP traffic on routers

Clients have ready access to DHCP servers

Front 12

What is the default lease period for DHCP dynamic address allocation?

Back 12

8 days

Front 13

What is the first packet sent to a DHCP server when a computer boots up?

Back 13

DHCPDISCOVER

Front 14

What is the key benefit of DHCP manual IP address allocation over manually configuring the IP address by person?

Back 14

This prevents accidental duplication of permanently assigned IP addresses.

Front 15

What kinds of servers should NOT be DHCP clients?

Back 15

Domain controllers, Internet web servers, and DHCP servers

Front 16

What service does Dynamic Host Configuration Protocol (DHCP) provide?

Back 16

Configures the IP address and other TCP/IP settings on network computers

Front 17

Which of the following Windows PowerShell cmdlets creates an IPv4 DHCP scope?

Back 17

Add-DhcpServerv4Scope

Front 18

Which of the following roles must be installed in order to deploy a DHCP Relay Agent on Windows Server 2012 R2?

Back 18

Remote Access

Front 19

Which of the following steps must be completed in order to do ensure a network printer is assigned the same address through the DHCP server?

Back 19

Create a reservation in the DHCP scope

Front 20

Your DHCP servers are burdened with heavy traffic, most related to IP address renewals. Unfortunately, virtually all the IP addresses in each of your subnets are allocated. Which option is the best way to lower the renewal traffic?

Back 20

Deploy additional DHCP servers on the most burdened subnets.

Front 21

A DNS server receives updated information. Other DNS servers have outdated information cached. What determines the amount of time that the old DNS data remains cached on a server and an update might occur?

Back 21

Time To Live (TTL) specified by each DNS server's administrator

Front 22

At what level of the DNS hierarchy are actual hosts, apart from the root servers?

Back 22

At the second-level domain level

Front 23

Concerning DNS domain hierarchy, what are examples of global top-level domains?

Back 23

.com, .net, .org

Front 24

Concerning DNS, what is negative caching?

Back 24

When a DNS server receives information about a non-existent host

Front 25

What do you call the source responsible for maintaining a domain’s resource records?

Back 25

Authoritative source

Front 26

The domain name part of a DNS name is _______ and consists of two or more words, separated by ______.

Back 26

hierarchical; periods

Front 27

The typical query one DNS server sends to a root name server is called a(n) _______.

Back 27

recursive query

Front 28

What DNS server represents the top of the DNS hierarchy?

Back 28

Root name server

Front 29

What are some best practices when creating internal DNS namespaces?

Back 29

Avoid an excessive number of domain levels

Front 30

What are the servers at the top of the DNS hierarchy called

Back 30

Root servers

Front 31

What client applications utilize DNS to resolve host names into IP addresses?

Back 31

All Internet applications working with host names must use DNS to resolve host names into IP address

Front 32

What is the character limit on individual domain names, and the limit on the Fully Qualified Domain Names (FQDNs)?

Back 32

63; 255

Front 33

What is the default TTL for a Windows Server 2012 R2 DNS server?

Back 33

1 Hour

Front 34

What is the primary benefit of a DNS forwarder?

Back 34

Reducing the traffic and making efficient use of available bandwidth across the network perimeter

Front 35

What is the primary purpose of name caching?

Back 35

Name caching enables the second name resolution request for the same name to bypass the referral process

Front 36

When a DNS server communicates a name resolution query to another DNS server, what type of datagram is used, and over what port?

Back 36

UTP/53

Front 37

When using DNS for name resolution only, why should a company consider using DNS servers outside the network perimeter?

Back 37

Less traffic crossing the network perimeter

Front 38

Who is responsible for the ratification of new top-level domains?

Back 38

Internet Corporation for Assigned Names and Numbers (ICANN)

Front 39

Why is the DNS service included in Windows Server 2012 R2 integrated with DHCP service?

Back 39

To allow a DHCP server to request a DNS server to update or create a record.

Front 40

You registered the domain name contoso.com. The FQDNs seattle.contoso.com and halifax.contoso.com are examples of different _____.

Back 40

subdomains of contoso.com