Chapter 11

How do DHCP servers respond to a DHCPDISCOVER message? DHCPINFORM DHCPRELEASE DHCPACK DHCPOFFER

DHCPOFFER

How far into the lease period does a DHCP client begin requesting renewal of the IP address? 50 percent, or about 2 days into the lease 75 percent, or about 2 days into the lease 50 percent, or at 4 days into the lease 87.5 percent, or about 7 days into the lease

50 percent, or at 4 days into the lease

What is the default lease period for DHCP dynamic address allocation? 96 hours 3.5 days 4.5 days 8 days

8 days

How are DHCP settings labeled by default in a Windows computer's network interface? Address retrieval DHCP Obtain an IP address automatically Automatic addressing

Obtain an IP address automatically

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? Increase the lease time. Deploy additional DHCP servers on the most burdened subnets. Shorten the lease time. Switch to manual allocation.

Deploy additional DHCP servers on the most burdened subnets.

DHCP standards define multiple methods to allocate IP addresses. What are they? Dynamic and automatic Automatic and manual Dynamic only Dynamic, automatic, and manual

Dynamic, automatic, and manua

What service does Dynamic Host Configuration Protocol (DHCP) provide? Resolves web addresses to IP addresses Resolves NetBIOS names to host names Configures the IP address and other TCP/IP settings on network computers Blocks unsolicited inbound traffic from entering the network perimeter

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

What is the first packet sent to a DHCP server when a computer boots up? DHCPINFORM DHCPDISCOVER DHCPOFFER DHCPACK

DHCPDISCOVER

Which of the following network components are typically capable of functioning as DHCP relay agents? Switches Routers Hubs Windows Server 2012 R2

Routers Windows Server 2012 R2 computers

To make use of Pre-boot Execution Environment (PXE) and Windows Deployment Services (WDS), what special configuration do you require on the server and client? The client must have a special PXE-enabled network adapter. The client and server both require some preparatory configuration. Both client and server are capable by default. 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.

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.

What is the key benefit of DHCP manual IP address allocation over manually configuring the IP address by person? The DHCP server then contains a centralized list of permanently assigned addresses. The DHCP server might pass on more information than just an IP address. This prevents accidental duplication of permanently assigned IP addresses. This manually assigned address is officially known as a reservation.

This prevents accidental duplication of permanently assigned IP addresses.

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? Dynamic address allocation does not require periodic lease renewal messages None, because both address allocation methods require periodic lease renewal messages 50 percent because automatic allocation cuts the periodic messages in half 100 percent because dynamic address allocation requires periodic lease renewal messages whereas automatic does not

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

Before a DHCP server can hand out addresses, which of the following steps must be completed? (Choose two answers.) A DHCP scope must be created and activated. The DHCP server must be created and authorized. The DHCP server must be put in the trusted list on the client computers. The DHCP server must be installed by an Enterprise Administrator.

A DHCP scope must be created and activated. The DHCP server must be created and authorized.

Which of the following message types is not used during a successful DHCP address assignment? DHCPACK DHCPINFORM DHCPDISCOVER DHCPREQUEST

DHCPINFORM

What kinds of servers should NOT be DHCP clients? Servers on a subnet outside the broadcast domain of the DHCP server DHCP servers Domain controllers, Internet web servers, and DHCP servers DHCP relay agents

Domain controllers, Internet web servers, and DHCP servers

Which of the following Windows PowerShell cmdlets creates an IPv4 DHCP scope? Add-DhcpServerv4Scope Add-DhcpServerScope Add-DhcpScope New-DhcpServerScope

Add-DhcpServerv4Scope

What are the advantages of using a distributed DHCP infrastructure? Large convergence of network traffic All the client/server network traffic is local, so minimal DHCP traffic on routers Reduced administrative burden with fewer DHCP servers Clients have ready access to DHCP servers

All the client/server network traffic is local, so minimal DHCP traffic on routers Clients have ready access to DHCP servers

At which layer of the OSI model does DHCP operate? Physical layer Presentation layer Network layer Application layer

Application layer

Which of the following steps must be completed in order to do ensure a network printer is assigned the same address every time through the DHCP server? Create a reservation in the DHCP scope. Create an exclusion in the DHCP scope. Create a special scope on the DHCP server. Define the DHCP server on the client in the Advanced TCP/IP Advanced Settings.

Create a reservation in the DHCP scope.

Virtualized DHCP servers can only supply IP addresses to virtualized client computers. True False

False

How does DHCP scope creation differ in Windows Server 2012 and Windows Server 2012 R2 compared to prior Windows Server versions? In Windows Server 2012 R2, creating the scope is done separately, before being allowed to add the DHCP Server role. In Windows Server 2012 R2, you create the scope as you install the DHCP Server role. In Windows Server 2012 R2, creating the scope is done separately, after adding the DHCP Server role. There are no fundamental differences in scope creation.

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

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? The client must have a special PXE-enabled network adapter. Both the client and server are capable by default. The client and server both require some preparatory configuration. 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.

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.

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

Remote Access

How does a DHCP client communicate which offered IP address it will accept from which DHCP server? The client sends a DHCPREQUEST message to the server. The client selects the closest server and beeps audibly to accept the offer. The client sends a DHCPACK message to all servers with the IP address of the chosen DHCP server. The client sends a DHCPREQUEST message to all servers with the IP address of the chosen DHCP server.

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

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? The server responds with a DHCPACK message to the client. The server responds with a DHCPNAK message to the client. The server responds with a DHCPSOS message to the client. The server ignores the client until the lease negotiation expires and process restarts.

The server responds with a DHCPNAK message to the client.