Chapter 6.6 IP Configuration

Which of the following statements about the Dynamic Hosts Configuration Protocol (DHCP) are true?

A workstation must request addressing information from a DHCP server. It can deliver a DNS server address in addition to the host IP address. DHCP servers deliver IP addresses as well as other host configuration information to network hosts. DHCP can be configured to assign any available address to a host, or it can assign a specific address to a specific host. DCHP clients, typically workstations, must send a request to a DCHP server before it will send IP addressing information to them.

You are setting up a small network in your office with one Windows server and 50 Windows workstations. You want to spend as little as possible configuring the workstations with IP addressing information. What should you do?

Install the DHCP service on your server. The DHCP protocol allows you to assign IP addresses automatically. In this scenario, you should configure the DHCP service to rin on the network server. The DHCP client on each workstation can then contact the DHCP server when the workstations connect to the network to be automatically assigned IP addressing information. You could instruct each user to manually enter IP addressing information but there is a higher change of error and will likely require more administrative overhead.

Which TCP/IP configuration parameter identifies the router that is used to reach hosts on remote networks?

Default gateway The default gateway identifies the router to which packets for remote networks are sent. The subnet mask identifies which portion of the IP address is the network address. The WINS server address identifies the WINS server that is used to resolve NetBIOS host names to IP addresses. The DNS server address identifies the DNS server that is used to resolve host names to IP Addresses. The alternate IP address identifies IP addressing information to be ised in the event the DHCP server can’t be reached. The host name identifies the logical name of the local system.

Which tool would you use in Windows Vista/& to manage network connections?

Network and Sharing Center Use the Network and Sharing Center in Windows Vista/7 to view and manage network connections. My Network Places is in Windows XP, and Network Neighborhood is in Windows 98. Use Internet Options to configure Internet and Internet Explorer settings.

Which service can you use on your network to automatically assign IP addresses to hosts and to help prevent the same address from being assigned to two different hosts?

DHCP You can use the Dynamic Host Configuration Protocol (DHCP) to set up a DHCP server that will assign IP addresses automatically to network hosts. DHCP servers will not assign the same IP address to two different hosts. ICMP is chiefly used by networked computers’ operating systems to send error messages. The Transmission Control Protocol (TCP) is one of the core protocols of the Internet protocol suite. The Internet Group Management Protocol (IGMP) is a communications protocol used to manage the membership of Internet Protocol multicast groups

Which mechanisms could you use to resolve a hostname into its associated IP address?

hosts file DNS You can use the Domain Name System (DNS) to get the IP address from a given host name. You can also use the local hosts file to map host names into IP addresses. On Windows systems, the file is located in C:\Windows\system32\drivers\etc\. You can use either the DHCP protocol or the BOOTP protocol to assign IP address and other configuration information to hosts automatically. Use FTP to transfer files.

You are the computer specialist in a small business. Your company server is named FS1 and has an IP address of 10.0.0.2. The hardware in you company server has started to experience intermittent failures, so you transferred the shares on the server to a spare server and took the main server offline. The spare server has an IP address of 10.0.0.3. You edit the existing A record for FS1 on your company’s DNS servver and redirect the hostname to the spare server’s IP address of 10.0.0.3.

After doing so, most users are able to accress the shares on the spare server by host name, but serveral users cannot. Instead, they see and error message indication the FS1 server could not be found.

Enter the command yo can run from the command prompt on these workstations that will allow them to access the shares on FS1 without performing a full restart.

ipconfig /flushdns Workstation maintain a cache of recently-resolved DNS names. When you use a DNS name, the computer first checks its cache. If the name is in the cache, the corresponding IP address will b used. This can sometimes cause problems if the IP address of a host has changed/ Old values in the cache might continue to be used for a time making communication using the DNS name impossible. To correct this problem on a Windows computer, run ipconfig /flushdns to delete the local DNS name cache

A Windows workstation is configured to reveive its IP configuration information from a DHCP server on the company network. The user at the workstation reports that she cannot use email an dis unable to reach the Internet. Using the ipconfig command you see that the workstation has been assigned the following special IP configuration:
-IP address: 169.254.0.1
-Subnet mask: 255.255.0.0

What is this special IP configuration called? -Automatic Private IP Addressing (APIPA). Why did the workstation receive this type of configuration? -The workstation was unable to contact the DHCP server. If a Windows client is configured to receive an IP address from a DHCP server, but cannot contact a DHCP server, it will automatically assign itself an IP address within the range of 169.254.0.1 to 169.254.255.254 with the subnet mask of 255.255.0.0 You can use APIPA instead of a DHCP server, but it should only be used on a small network that does not need a default gateway or DNS server setting configured.

You have a host on your network that provides a service that requires the server to always use a specific IP address. Which IP addressing method can you use to manually assign the specific IP address?

Static IP Addressing With static IP addressing, you manually assign all configuration values. Static addressing is prone to error and should only be used under the following conditions: -The network has a small number of hosts. -The network will not change or grow. -You have hosts that must always use the same IP address.

You have a use who takes his laptop home every day after work. When he’s working in the office, the laptop must get an IP address from the DHCP server so you configure it to obtain IP and DNS information automatically. When he’s working from home, the laptop must use IP and DNS information that connects with his home network.

Which IP addressing method can you use to make sure he gets a network connection at home?

Alternate IP Configuration With an Alternate IP Configuration, the systems’s IPv4 Properties are configured on the General tab to use DHCP to automatically obtain TCP/IP configuration information. If a DHCP server cannot be contacted, the static IP configuration information on the IPv4 Properties’ Alternate Configuration tab is used.