Chapter 4

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Eastern Gateway Community College *

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Dec 6, 2023

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4.1.9 1 - What is the decimal format of the following binary IP address? 11001110.00111010.10101010.01000011 - 206.58.170.67 2 - What is the correct binary form of the decimal IP address 192.168.1.1? - 11000000.10101000.00000001.00000001 3 – 4 - Which of the following are valid IP addresses - 172.17.1.3 AND 224.0.0.1 AND 137.65.1.1 5 - workstation has been assigned the following IP addressing information:  IP address: 192.168.1.26  Subnet mask: 255.255.255.0  Default gateway: 192.168.1.254  DNS server: 192.168.1.1

Given this information, what is the network IP address of this workstation? - 192.168.1.0 6 - A network host has an IP address of 137.65.1.2 assigned to it. Given that the network uses the default classful subnet mask, what is the default routing prefix for this address using CIDR subnet mask notation? - /16 7 - Your network uses a network address of 137.65.0.0 with a subnet mask of 255.255.0.0. How many IP addresses are available for assignment to network hosts on this network? – 65534 8 - Which of the following IP addresses is a valid IP address for a host on a public network? - 142.15.6.1 9 - Which of the following are private IP addresses? 10.244.12.16 AND 192.168.250.11 10 - Which of the following devices is most likely to be assigned a public IP address? - A router that connects your home network to the internet. 4.2.8 1 - Your network has a network address of 172.17.0.0 with a subnet mask of 255.255.255.0. Which of the following are true concerning this network? - 172.17.0.255 is the network broadcast address. AND 254 IP addresses can be assigned to host devices. 2 - You have two subnets on your private network, one with a 20-bit mask, and another with a 22-bit mask. How many available host addresses are there on each subnet? 1022 AND 4094 3 - You have a small network with three subnets as shown in the exhibit. IP addresses for each router interface are also indicated in the exhibit. How many IP addresses on each subnet remain that can be assigned to hosts? SubnetA = 125, SubnetB = 0, SubnetC = 13 4 –

5 - You have a network address of 132.66.0.0 and a subnet mask of 255.255.224.0. Which four of the following are valid subnet addresses? - 132.66.192.0 AND 132.66.96.0 AND 132.66.0.0 AND 132.66.224.0 6 - You have a network address of 201.79.187.0 and a subnet mask of 255.255.255.192. Which three of the following are valid host addresses for subnet 201.79.187.128? - 201.79.187.166 AND 201.79.187.189 AND 201.79.187.132 7 - While calculating how many subnets are available for a given IP address and subnet mask, when should you use the 2^n - 2 formula? - The network uses a classful routing protocol, such as RIP version 1 or IGRP. AND The no ip subnet zero command is configured. 8 - You have a network address of 202.200.55.0 with a subnet mask of 255.255.255.224. Which of the following is the broadcast address for subnet 202.200.55.96? - 202.200.55.127 9 - Your network has been assigned 168.11.0.0 as the network address. You have determined that you need 70 subnets. Which subnet mask value should you select to provide 70 subnets? – 255.255.254.0

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10 - You need to connect a router to a subnet. The subnet uses the IP address 192.168.12.0/26. You are instructed to assign the last IP address on the subnet to the router. Which IP address will you use? 192.168.12.62 4.3.4 In this lab, your task is to subnet the 172.30.0.0/24 network to provide sufficient host addresses for both subnets while minimizing wasted IP addresses.  Use a 26-bit subnet mask on both subnets. Although there will be wasted bits for the subnet connected to FastEthernet0/0, /26 is the smallest subnet mask that will work for both subnets.  Configure the IP address on the two router interfaces as follows: o For FastEthernet0/0, use the first possible subnet and the last address on the subnet. o For FastEthernet0/1, use the fourth possible subnet and the last address on the subnet.  Enable both interfaces.  Save your changes to the startup-config file. Complete this lab as follows: 1. Select ATLANTA . 2. Press Enter to get started. 3. At the ATLANTA> prompt, type enable and press Enter . 4. At the ATLANTA# prompt, type configure terminal and press Enter . 5. At the ATLANTA(config)# prompt, type interface FastEthernet0/0 and press Enter . 6. At the ATLANTA(config-if)# prompt, type ip address 172.30.0.62 255.255.255.192 and press Enter . 7. At the ATLANTA(config-if)# prompt, type no shutdown and press Enter . 8. At the ATLANTA(config-if)# prompt, type interface FastEthernet0/1 and press Enter . 9. At the ATLANTA(config-if)# prompt, type ip address 172.30.0.254 255.255.255.192 and press Enter . 10. At the ATLANTA(config-if)# prompt, type no shutdown and press Enter . 11. At the ATLANTA(config-if)# prompt, type exit and press Enter . 12. At the ATLANTA(config)# prompt, type exit and press Enter . 13. Save your changes to the startup-config file. a. At the ATLANTA# prompt, type copy run start and press Enter . b. Press Enter to begin building the configuration. 4.3.5

In this lab, your task is to subnet the 172.16.0.0 network to provide sufficient host addresses for both subnets while minimizing wasted IP addresses.  Choose one subnet mask for each subnet. The masks should provide enough host addresses without wasting IP addresses.  Assign IP addresses and correct subnet masks to the SFO interfaces connected to the switches in this order: o For FastEthernet0/0, use the second possible subnet and the last address on the subnet. o For FastEthernet0/1, use the next available subnet that does not overlap and the last address on the subnet.  Enable both interfaces.  Save your changes to the startup-config file. Complete this lab as follows: 1. Select SFO . 2. Press Enter to get started. 3. At the SFO> prompt, type enable and press Enter . 4. At the SFO# prompt, type configure terminal and press Enter . 5. At the SFO(config)# prompt, type interface FastEthernet0/0 and press Enter . 6. At the SFO(config-if)# prompt, type ip address 172.16.15.254 255.255.248.0 and press Enter . 7. At the SFO(config-if)# prompt, type no shutdown and press Enter . 8. At the SFO(config-if)# prompt, type interface FastEthernet0/1 and press Enter . 9. At the SFO(config-if)# prompt, type ip address 172.16.17.254 255.255.254.0 and press Enter . 10. At the SFO(config-if)# prompt, type no shutdown and press Enter . 11. At the SFO(config-if)# prompt, type exit and press Enter . 12. At the SFO(config)# prompt, type exit and press Enter . 13. Save your changes to the startup-config file. a. At the SFO# prompt, type copy run start and press Enter . b. Press Enter to begin building the configuration. 4.3.6 1 - You are configuring a network and have been assigned the network address of 221.12.12.0. You want to subnet the network to allow 5 subnets with 20 hosts per subnet. Which subnet mask should you use? 255.255.255.224 2 - ou have a single router with three subnets as shown. Each subnet has the number of hosts specified.

You need to select a subnet mask for each subnet that provides sufficient host addresses without wasting addresses.  Which mask values should you use? SubnetA = 255.255.255.192  SubnetB = 255.255.255.224  SubnetC = 255.255.255.128 3 - You need to design a network that supports 275 hosts. You want to place all hosts in a single broadcast domain, and you want to make sure you do not waste IP addresses. How should you implement your plan? Place all hosts on the same subnet. Use a mask of 255.255.254.0. 4 - You have a network with two routers as shown. You need to choose subnet addresses for subnets 1 and 2. Which of the following subnets would you use? 172.30.12.0/28 AND 172.30.12.128/26 5 - You have a small network with three subnets as shown. IP addresses for each router interface are also indicated. You need to connect Wrk1_A to SubnetA and Wrk5_C to SubnetC. Which IP addresses should you use? Wrk1_A = 192.168.111.62 AND Wrk5_C = 10.155.64.97 6 - Your client has a class B network address and needs to support 500 hosts on as many subnets as possible. Which subnet mask should you recommend? 255.255.254.0 7 - You have a network address of 133.233.11.0 and a subnet mask of 255.255.255.240. How many assignable host addresses are on each subnet? 14 8 - You have been assigned the IP address of 197.177.25.0 for your network. You have determined that you need five subnets to allow future growth. What subnet mask value would you use? 255.255.255.224 9 - You have a network address of 132.66.0.0 and a subnet mask of 255.255.254.0. How many possible host addresses are on each subnet, excluding host addresses of all 1s and all 0s? 510 10 - You have a network address of 220.16.22.0 and have selected 255.255.255.224 as the subnet mask value. How many possible subnets are there? eight

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4.4.6 1 - ou have a network with two routers as shown. RouterA and RouterB are configured to use RIP version 2 with auto-summarization enabled. Which summarized network entry will RouterA have in its routing table for the subnets connected to RouterB? 192.168.12.0/24 2 - You have a network with two routers as shown. You would like to configure a single static route on RouterA that summarizes the routes accessible through RouterB. Which static route would you configure? ip route 192.168.100.64 255.255.255.192 192.168.100.34 3 - You have a network with two routers as shown. Router A currently has a single static route to network 10.0.155.80/28. You need to add another subnet to router B. This subnet should also use a 28-bit mask. You would like to replace the existing static route to network 10.0.155.80/28 with a single summarized static route that includes the old network and the new network. You want to minimize wasted addresses. What should you do? Configure the static route to use a network of 10.0.155.64 and a mask of 255.255.255.224. AND Use 10.0.155.64/28 for the new subnet. 4 - You have a network with three routers as shown. All routers are configured to share information for all known routes using the same routing protocol. Automatic summarization is enabled. Router B shares its known networks with router A. Which of the following routes will be in router A's routing table? 172.16.2.0/27, 172.16.2.32/28, and 172.16.2.48/28 5 - Which of the following allow you to disable automatic summarization? EIGRP AND RIP2 6 - Terry is using the EIGRP routing protocol. Terry wants to use a single route to represent multiple routes to reduce the size of routing tables in the network. Which of the following routing summarization methods is being used? MANUAL 7 - On your network, you have subnetting the network address 10.0.0.0 into smaller subnets, and it is separated by a network with different classful network addresses, such as 12.0.0.0. Which route summarization command do you need to execute? Router(config-router)# no auto- summary 8 - The following commands have been executed on a router:

Router(config-router)#no auto-summary Router(config-router)#exit Router(config)#int fa 0/1 Router(config-if)#ip summary-address rip 172.16.0.0 255.255.0.0 Which interface type is fa 0/1? Outbound 9 - When using the ip summary-address command, which of the following is true? Neighboring devices only have a summary route in their routing tables. 10 - Which of the following describes route summarization? Combines a contiguous set of addresses into a single address. 4.5.11 1 – 2 - Consider the following IPv6 address:

FE80:0000:0000:0055:0000:0000:000A:AB00 Which of the following are valid shortened forms of this address? FE80::55:0000:0000:A:AB00 AND FE80:0000:0000:0055::000A:AB00 3 – 4 - Which of the following IPv6 addresses is equivalent to the IPv4 loopback address of 127.0.0.1? ::1 5 - You need to design an IPv6 addressing scheme for your network. The following are key requirements for your design:  Infrastructure hosts, such as routers and servers, are assigned static interface IDs, while workstations, notebooks, tablets, and phones are assigned interface IDs dynamically.  Internet access must be available to all hosts through an ISP.  Site-to-site WAN connections are created using leased lines. Which type of IPv6 addressing is most appropriate for hosts in this network? Global unicast addressing 6 - Your organization has decided to implement unique local unicast IPv6 addressing. A global ID of FD01:A001:0001::/48 has been selected for the organization's IPv6 addressing scheme. The next 16 bits beyond the global ID have been used to define the following subnets:  FD01:A001:0001:0001::/64  FD01:A001:0001:0002::/64  FD01:A001:0001:0003::/64  FD01:A001:0001:0004::/64 You need to statically assign an interface ID to a router interface connected to the FD01:A001:0001:0003::/64 subnet. To ensure uniqueness, the interface ID should be constructed using the MAC address of the router interface.

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Which interface configuration command would you use to do this? ipv6 address FD01:A001:0001:0003::/64 eui-64 7 - You are working on a workstation with the following MAC address: 10-01-64-AB-78-96 Which of the following will be the link-local address using the modified EUI-64 format? FE80::1201:64FF:FEAB:7896 8 - Which of the following are characteristics of 6-to-4 tunneling? Works through NAT AND Dual stack routers AND Tunnel endpoints configured on routers 9 - Your company has just started contracting with the government. As part of the contract, you have configured a special server for running a custom application. Contract terms dictate that this server use only IPv6. You have several hosts that need to communicate with this server. These hosts only run IPv4 and cannot be configured to run IPv6. Which solution would you use to allow the IPv4 clients to communicate with the IPv6 server? NAT-PT 10 - Which of the following IPv6 addresses is used by a host to contact a DHCP server? FF02::1:2 4.6.5 In this lab, your task is to configure RouterB as a DHCP server that will respond to the clients' DHCPDISCOVER packets.  Force the DHCP server process on RouterB not to log IP address conflicts.  Exclude IP addresses 192.168.1.1 and 192.168.1.254 from being assigned to hosts.  Create the DHCP address pool as follows: o Name: VLAN10 o Network and Mask: 192.168.1.0 255.255.255.0 o Domain name: Eastsim.com o DNS servers: 192.168.5.2 and 192.168.5.3 o Default gateway: 192.168.1.1 o Lease: 13 days  When you're finished, save the configuration changes on RouterB. Complete this lab as follows:

1. Select RouterB . 2. Press Enter to get started. 3. At the RouterB> prompt, type enable and press Enter . 4. At the RouterB# prompt, type config t and press Enter . 5. At the RouterB(config)# prompt, type no ip dhcp conflict logging and press Enter . 6. At the RouterB(config)# prompt, type ip dhcp excluded-address 192.168.1.1 and press Enter . 7. At the RouterB(config)# prompt, type ip dhcp excluded-address 192.168.1.254 and press Enter . 8. At the RouterB(config)# prompt, type ip dhcp pool VLAN10 and press Enter . 9. At the RouterB(dhcp-config)# prompt, type network 192.168.1.0 255.255.255.0 and press Enter . 10. At the RouterB(dhcp-config)# prompt, type domain-name Eastsim.com and press Enter . 11. At the RouterB(dhcp-config)# prompt, type dns-server 192.168.5.2 192.168.5.3 and press Enter . 12. At the RouterB(dhcp-config)# prompt, type default-router 192.168.1.1 and press Enter . 13. At the RouterB(dhcp-config)# prompt, type lease 13 and press Enter . 14. Press Ctrl + Z . 15. At the RouterB# prompt, type copy run start and press Enter . 16. Press Enter to begin building the configuration. 4.6.6 In this lab, your task is to:  Exclude IP addresses 192.168.1.20 and 192.168.1.21 from being assigned to hosts.  Create a DHCP address pool for ServerA as follows: o Name: ServerA o Host: 192.168.1.20 255.255.255.0 o MAC address: 00-18-8B-76-D6-9E  Create a DHCP address pool for ServerB as follows: o Name: ServerB o Host: 192.168.1.21 255.255.255.0 o MAC address: 00-18-8B-57-C7-8A  When you are finished, save the configuration changes on RouterB. Complete this lab as follows: 1. Select RouterB . 2. Press Enter to get started. 3. At the RouterB> prompt, type enable and press Enter . 4. At the RouterB# prompt, type config t and press Enter .

5. At the RouterB(config)# prompt, type ip dhcp excluded-address 192.168.1.20 and press Enter . 6. At the RouterB(config)# prompt, type ip dhcp excluded-address 192.168.1.21 and press Enter . 7. At the RouterB(config)# prompt, type ip dhcp pool ServerA and press Enter . and press Enter . 8. At the RouterB(dhcp-config)# prompt, type host 192.168.1.20 /24 and press Enter . 9. At the RouterB(dhcp-config)# prompt, type client-identifier 0100.188B.76D6.9E and press Enter . 10. At the RouterB(dhcp-config)# prompt, type exit and press Enter . 11. At the RouterB(config)# prompt, type ip dhcp pool ServerB and press Enter . 12. At the RouterB(dhcp-config)# prompt, type host 192.168.1.21 /24 and press Enter . 13. At the RouterB(dhcp-config)# prompt, type client-identifier 0100.188B.57C7.8A and press Enter . 14. Press Ctrl + Z . 15. At the RouterB# prompt, type copy run start and press Enter . 16. Press Enter to begin building the configuration. 4.6.7 In this lab, your task is to configure RouterB as a DHCP relay agent to forward the clients' broadcast DHCPDISCOVER packets as unicast IP packets addressed to the DHCP server.  Configure Fa 0/1 to forward all DHCP packets to 172.16.1.1 .  Restrict the following UDP broadcast protocols from being forwarded to RouterA: o Port 137: NetBIOS Name Service o Port 138: NetBIOS Datagram Service  When you're finished, save the configuration changes on RouterB. Complete this lab as follows: 1. Select RouterB . 2. Press Enter to get started. 3. At the RouterB> prompt, type enable and press Enter . 4. At the RouterB# prompt, type config t and press Enter . 5. At the RouterB (config)# prompt, type int fa0/1 and press Enter . 6. At the RouterB(config-if)# prompt, type ip helper-address 172.16.1.1 and press Enter . 7. At the RouterB(config-if)# prompt, type exit and press Enter . 8. At the RouterB(config)# prompt, type no ip forward-protocol udp 137 and press Enter . 9. At the RouterB(config)# prompt, type no ip forward-protocol udp 138 and press Enter . 10. Press Ctrl + Z . 11. At the RouterB# prompt, type copy run start and press Enter . 12. Press Enter to begin building the configuration.

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4.6.8 1 - You have a TCP/IP network with 50 hosts. There have been inconsistent communication problems between hosts. You run a protocol analyzer and discover that two hosts are assigned the same IP address. Which protocol can you implement on your network to help prevent problems such as this? DHCP 2 - Which of the following statements about the dynamic host configuration protocol (DHCP) are true? It can deliver other configuration information in addition to IP addresses. AND A DHCP server assigns addresses to requesting hosts. 3 - You have a DHCP server on your network. Which of the following is the correct order of DHCP messages exchanged between a client and server when the client obtains an IP address using a 4-way handshake? DHCPDISCOVER, DHCPOFFER, DHCPREQUEST, DHCPACK 4 - You have a small network as shown. You configure DHCP on Router1 to provide IP addresses to all hosts connected to SwitchA. Following the configuration, you verify that Wrk1 has received an IP address from the DHCP service. Wrk1 can ping every host on the subnet, but cannot communicate with any hosts connected to Switch B or on the internet. What should you do? Configure the DHCP server to deliver the default gateway address along with the IP address. 5 - You have a small network connected to the internet as shown below. Router1 will provide NAT services to all hosts on the private network and DHCP services to hosts connected to SubnetA. Srv1 is located on SubnetA. You want to make sure that this server is assigned the same IP address every time it boots, but you still want to centrally manage the address that it uses. What should you do? Configure a DHCP binding for Srv1. 6 - You want to configure DHCP on your Cisco router to provide automatic IP address assignment to a single subnet. You will use 192.168.12.0/27 for the subnet address. The router interface has been configured with an IP address of 192.168.12.1. Additionally, you want to make sure that a specific server, SrvFS, always gets the last IP address on the subnet. How should you configure DHCP on the router? Create an address pool with a start address of 192.168.12.2 and end address of 192.168.12.30. AND Create a DHCP binding for address 192.168.12.30.

7 - Srv2 is a host connected to the Fa0/1 interface of RouterA. Its MAC address is 02c7.f800.0422 and is configured to use DHCP to request an IP address. Which of the following addresses will most likely be assigned to Srv2 when it boots? It will not be assigned an IP address. 8 - Srv2 is a host connected to the Fa0/0 interface of RouterA with a MAC address of 02c7.f800.0422. When it boots, it is assigned the IP address of 192.168.11.166. It can only communicate with hosts on the same subnet. What should you do to correct the problem? Add a default-router statement to DHCP pool 2. 9 - You have a Cisco router connected to a local ISP. The ISP dictates that the router use DHCP to receive its IP address and other configuration information. Which command should you use when configuring the ISP interface on the router? ip address dhcp 10 - You have three hosts on network 192.168.10.0/24 as shown. If interface Fa0/0 on RouterB has the ip helper-address 172.17.10.20 configuration command in its running configuration, which of the following statements are true? RouterB will forward broadcast packets sent to the: Time, DNS, BOOTP, and TFTP ports. AND The hosts may receive their IP address information through DHCP. 4.7.6 In this lab, your task is to complete the following:  Configure the IPv4 settings for the Local Area Connection network connection to use the following DNS server addresses: o Preferred DNS server: 208.67.222.222 o First alternate DNS server: 208.67.222.220 o Second alternate DNS server: 208.67.220.123  Have Dorm-PC validate the static DNS server information. Complete this lab as follows: 1. In the notification area, right-click the Network icon and select Open Network & Internet settings . 2. Select Ethernet . 3. Select Change adapter options . 4. Right-click Ethernet and select Properties . 5. Select Internet Protocol Version 4 (TCP/IPv4) .

6. Select Properties . 7. Select Use the following DNS server addresses to manually configure the DNS server addresses. 8. Select Advanced to configure more than two DNS server addresses. 9. Select the DNS tab. 10. Select Add to configure DNS server addresses. 11. Enter a DNS server address . 12. Select Add . 13. Repeat steps 10–12 to configure additional DNS server addresses. 14. Select OK . 15. Select Validate settings upon exit and then select OK . 16. Select Close to close Ethernet Properties. 4.7.7 In this lab, your task is to:  Create a primary forward lookup zone on CorpDC using the following parameters: o Deselect Store the zone in Active Directory . o Use the zone name acct.CorpNet.local . o Use the default name for the zone file. o Do not allow dynamic updates. o Allow zone transfers to any server.  Create a secondary forward lookup zone using the following parameters: o Use the host server CorpDC3 o Use the zone name acct.CorpNet.local as the secondary zone name. o Specify CorpDC or 192.168.0.11 as the master DNS server for the zone. Complete this lab as follows: 1. Create a primary forward lookup zone. a. In Hyper-V Manager, select CORPSERVER . b. Maximize the window to view all virtual machines. c. Right-click CorpDC and select Connect (maximize the window for easier viewing if desired). d. In Server Manager, select Tools > DNS . e. Expand CorpDC to host the zone. f. Right-click Forward Lookup Zones and select New Zone . g. In the New Zone wizard, select Next . h. Make sure Primary zone is selected. i. Deselect Store the zone in Active Directory (this option is only available for domain controllers); then select Next . j. In the Zone name field, enter acct.CorpNet.local for the zone and select Next . k. Make sure Create a new file with this file name is selected and select Next .

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l. Specify the updates that will be accepted for the DNS zone and select Next . m. Select Finish to complete the New Zone wizard. 2. Configure zone transfer. a. Under Forward Lookup Zones, right-click the new zone and select Properties . b. Select the Zone Transfers tab. c. Make sure Allow zone transfers is selected. d. Select To any server . e. Select OK . 3. Create a Secondary Forward Zone. a. From DNS Manager, expand the CorpDC3 that will host the new zone. b. Right-click Forward Lookup Zones and select New Zone . c. Select Next . d. On the Zone Type dialog, select Secondary zone as the zone type and select Next . e. Enter the acct.CorpNet.local ; then select Next . f. In the Master Servers box, select Click here below IP Address. g. Enter the IP address or the name of a server that hosts a copy of the zone. h. Press Enter or click away from the IP address to begin validation. i. After it is validated, select Next . j. Select Finish to complete the New Zone wizard. 4.7.8 In this lab, your task is to:  Create an IPv4 Active-Directory-integrated primary reverse lookup zone for subnet 192.168.0.0/24. Be sure to accept the default replication and dynamic updates settings.  Create A records and PTR records for the following hosts: Host Name IP Address CorpServer 192.168.0.10 CorpFiles16 192.168.0.12 CorpFiles12 192.168.0.13 CorpDHCP 192.168.0.14 CorpWeb 192.168.0.15 Complete this lab as follows: 1. Create a primary reverse lookup zone as follows: a. In Hyper-V Manager, select CORPSERVER . b. Right-click CorpDC and select Connect . c. In Server Manager, select Tools > DNS . d. Expand CORPDC .

e. Right-click Reverse Lookup Zones and select New Zone . f. Select Next . g. Make sure Primary zone is selected. h. Make sure Store the zone in Active Directory is selected and then select Next . i. Keep the default replication scope setting and select Next . j. Keep the default reverse lookup zone settings and select Next . k. In the Network ID field, type 192.168.0 as the network ID. Omit any trailing zeroes that are excluded based on the subnet mask. For example, type 192.168.1 for subnet 192.168.1.0/24. Type 10.1 for subnet 10.1.0.0/16. l. Select Next . m. Keep the default dynamic update settings and select Next . n. Select Finish . 2. Create a host (A) and associated pointer (PTR) record as follows: a. In DNS Manager, expand Forward Lookup Zones . b. Right-click CorpNet.local and select New Host (A or AAAA) . c. In the Name field, enter the host name . d. In the IP address field, enter the IP address . e. Select Create associated pointer (PTR) record . The reverse lookup zone must exist for this record to be created. f. Select Add Host . g. Select OK . h. Repeat steps 2c - 2g to add additional host records. i. Select Done . 4.7.9 In this lab, you create CNAME (ALIAS) records in the sales.private domain using the following values: ALIAS Name Target Host (FQDN) (leave blank) CorpWeb.CorpNet.com intranet CorpWeb.CorpNet.com www CorpWeb.CorpNet.com Complete this lab as follows: 1. In Hyper-V Manager, select CORPSERVER . 2. Right-click CorpDC and select Connect . 3. In Server Manager, select Tools > DNS . 4. Expand CORPDC .

5. Expand the Forward Lookup Zones . 6. Right-click the sales.private zone and select New Alias (CNAME) . 7. In the Alias name field, enter the alias name (to use the parent domain name for the alias, leave the field blank). 8. Enter the fully qualified domain name of the host. 9. Click OK . 10. Repeat steps 6 - 9 to create additional records. 4.7.10 In this lab, your task is to complete the following:  Ping the CorpWeb server using its full name of CorpWeb.CorpNet.local .  Ping the CorpWeb server using its IP address 192.168.0.15 .  Create any DNS records needed to fix the problem. o Hostname: CorpWeb o IP address: 192.168.0.15  Use the ping command to verify that the problem is fixed. This problem is caused because the CorpWeb server does not have a host (A) record in DNS. Because you can ping the server using its IP address, you know that the server is running and responsive. On the CorpNet zone, you should have created the host record for CorpWeb using 192.168.0.15 as the address. Complete this lab as follows: 1. Right-click Start and select Windows PowerShell (Admin) . 2. At the command prompt, enter ping CorpWeb.CorpNet.local and press Enter . Notice that the ping is unable to find CorpWeb. 3. Type ping 192.168.0.15 and press Enter . This time the ping succeeds using the IP address, indicating that there is a problem with the CorpWeb DNS record. 4. In Hyper-V Manager, select CORPSERVER . Resize the window to view all virtual machines. 5. Right-click CorpDC and select Connect (maximize the window for easier viewing if desired). 6. In Server Manager, select Tools > DNS . 7. Expand CORPDC . 8. Expand Forward Lookup Zones . 9. Right-click CorpNet.local and select New Host (A or AAAA) . 10. In the Name field, enter CorpWeb . 11. In the IP Address field, enter the 192.168.0.15 . 12. Select Create associated pointer (PTR) record to automatically create the PTR record for the new host.

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13. Select Add Host . 14. Select OK . 15. Select Done to close the New Host dialog. 16. From the Windows PowerShell window on CorpServer, enter ping CorpWeb.CorpNet.local and press Enter . Now the ping succeeds. 4.7.11 1 – 2 - If dynamic DNS is being used, which of the following events will cause a dynamic update of the host records? The ipconfig /registerdns command is entered on a workstation. AND The DHCP server renews an IP address lease. 3 - Which of the following services automatically creates and deletes DNS host records when an IP address lease is created or released – DYNAMIC DNS 4 - You want to implement a protocol on your network that allows computers to find the IP address of a host from a logical name. Which protocol should you implement? DNS 5 - You are setting up a new branch office for your company. You would like to implement solutions to provide the following services:  Hosts should be able to contact other hosts using names such as server1.westsim.com.

 IP address assignment should be centrally managed. Which services should you implement on your network to meet the requirements? DNS AND DHCP 6 – 7 - What is the difference between a forward lookup zone and a reverse lookup? A reverse lookup finds the host name from a given IP address. AND A forward lookup finds the IP address for a given host name. 8 - You have a workstation configured with DNS server addresses as follows:  Primary DNS server = 192.168.1.1  Alternate DNS server = 192.168.1.155 While browsing the internet, you go to www.cisco.com. A few minutes later, you type ping www.cisco.com into a command prompt. How will the workstation get the IP address for www.cisco.com ? Out of its local DNS cache 9 - Listed below are several places that a workstation checks to resolve DNS hostnames.  A. Primary DNS server  B. Secondary DNS servers  C. HOSTS file  D. Local DNS cache

In a browser, you type the name of a website. In which order will these locations be checked during the name resolution process – D,C,A,B 10 -

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Chapter 4

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