Chapter 4 quiz

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?.1

/16

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? (Select two.).2

1022 4094

Match each decimal value on the left with the corresponding hexadecimal value on the right. Not all decimal values have a corresponding hexadecimal value..1

11 correct answer: 17 B correct answer: 11 D correct answer: 13 F correct answer: 15 C correct answer: 12 10 correct answer: 16

What is the correct binary form of the decimal IP address 192.168.1.1?.1

11000000.10101000.00000001.00000001

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?.2

132.66.192.0 132.66.96.0 132.66.224.0 132.66.0.0

Which of the following are valid IP addresses? (Select three.).1

137.65.1.1 172.17.1.3 224.0.0.1

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? .3

14 You can calculate the number of possible host addresses by completing the following steps: Convert the subnet mask to binary (240 = 11110000). Count the total number of unmasked bits in the subnet mask (4). Use the formula 2^n - 2 where n is the number of unmasked bits. In this example, there are 2^4 - 2, or 14, host addresses for each subnet.

Which of the following IP addresses is a valid IP address for a host on a public network?.1

142.15.6.1

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? .4

172.16.2.0/27, 172.16.2.32/28, and 172.16.2.48/28

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? (Select two.) .3

172.30.12.128/26 172.30.12.0/28 For subnet 1, you will need a 28-bit mask to provide up to 14 host addresses. Using a 27-bit mask would waste IP addresses. For subnet 2, you will need a 26-bit mask to give you up to 62 host addresses (a 27-bit mask provides only 30 host addresses). For subnet 1, use 172.30.12.0 as the subnet address. 172.30.12.8 is not a valid subnet address for a 28-bit mask (valid subnets must be in increments of 16: 0, 16, 32, etc.). For subnet 2, use 172.30.12.128. 172.30.12.64 is a valid subnet address, but the range of IP addresses (172.30.12.65 to 172.30.12.126) overlaps with the 172.30.12.96/27 subnet.

A 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?.1

192.168.1.0 The IP address includes both the network and the host address. The subnet mask is a 32-bit number associated with each IP address that identifies the network portion of the address. In binary form, the subnet mask is always a series of 1s followed by a series of 0s (1s and 0s are never mixed in sequence in the mask). In this example, the decimal form of the subnet mask is 255.255.255.0. This specifies that the network address in this example is 192.168.1.0

You 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? .4

192.168.12.0/24 Subnets on RouterB will be summarized as 192.168.12.0/24. Auto-summarization with RIP v2 or EIGRP summarizes routes along classful network boundaries (meaning the default subnet mask is used).

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? .2

192.168.12.62

Which of the following are private IP addresses? (Select two.).1

192.168.250.11 10.244.12.16

Based on the address prefix for each IPv6 address on the right, identify the address type from the list on the left. (Addresses used might not represent actual addresses used in production.) .5

2001:6789:9078::ABCE:AFFF:FE98:0001 Global unicast FD00::8907:FF:FE76:ABC Unique local FEA0::AB89:9FF:FE77:1234 Link-local FF00:98BD:6532::1 Multicast FF02::1:2 Multicast Explanation Based on previous standards, global unicast addresses start with 20, but can now include any prefix that is not reserved. Addresses beginning with FC or FD are unique local addresses. Addresses beginning with FE8, FE9, FEA, or FEB are link-local addresses. Addresses beginning with FF are multicast addresses. There are no broadcast addresses in IPv6.

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?.2

201.79.187.132 201.79.187.189 201.79.187.166

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?.2

202.200.55.127

What is the decimal format of the following binary IP address?.1

206.58.170.67

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? (Select two.).2

254 IP addresses can be assigned to host devices. 172.17.0.255 is the network broadcast address.

Drag each binary subnet mask on the left to its appropriate decimal equivalent on the right..2

255.0.0.0 11111111.00000000.00000000.00000000 255.255.255.128 11111111.11111111.11111111.10000000 : 255.224.0.0 11111111.11100000.00000000.00000000 255.255.0.0 11111111.11111111.00000000.00000000 255.255.255.252 11111111.11111111.11111111.11111100

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? .3

255.255.254.0

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? .2

255.255.254.0

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? .3

255.255.255.224

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? .3

255.255.255.224 Explanation Use 255.255.255.224 as the subnet mask. To find the number of subnets supported, use the formula 2^n, where n is the number of additional masked bits. 224 masks 3 bits, giving you 2^3, or 8 subnets.

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? .3

510 You can calculate the number of possible host addresses by completing the following steps: Convert the subnet mask to binary (254 = 11111110). Count the total number of unmasked bits in the subnet mask, including the empty octet to get a total of 9. For example, 11111110.000000000. Use the formula 2^n - 2, where n is the number of unmasked bits. In this example, there are 2^9 - 2, or 510, host addresses for each subnet.

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?.1

65534

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? .3

8 There are eight possible subnets. You can identify the number of possible subnets by completing the following steps: Convert the mask to binary (224=11100000). Count the number of extra bits in the mask. Use the formula 2^m to find the number of subnets. There are 3 extra masked bits. 2^3 gives you 8 subnets.

Which of the following IPv6 addresses is equivalent to the IPv4 loopback address of 127.0.0.1? .5

::1 The IPv6 loopback address is ::1. The local loopback address is not assigned to an interface. It can be used to verify that the TCP/IP protocol stack has been properly installed on the host. :: is the unspecified address (also identified ::/128). The unspecified address is used when there is no IPv6 address. It is typically used during system startup, when the host has not yet configured its address. The unspecified address should not be assigned to an interface. Multicast addresses have an FF00::/8 prefix. FF02::/8 is the multicast prefix for all nodes on the local link.

What is the difference between a forward lookup zone and a reverse lookup? (Select two.)

A forward lookup finds the IP address for a given host name . A reverse lookup finds the host name from a given IP address.

Which of the following devices is most likely to be assigned a public IP address?.1

A router that connects your home network to the internet.

You have configured DHCP on your router. A partial configuration is shown below: hostname RouterA!interface FastEthernet0/0ip address 192.168.11.1 255.255.255.0speed autoduplex auto!interface FastEthernet0/1ip address 192.168.12.1 255.255.255.0speed autoduplex auto!ip dhcp excluded-address 192.168.11.1 192.168.11.50!ip dhcp pool 0network 192.168.11.0 255.255.255.0domain-name westsim.comdns-server 192.168.11.2 192.168.12.2!ip dhcp pool 2host 192.168.11.166hardware-address 02c7.f800.0422!access-list 1 permit 192.168.11.0 0.0.0.255! 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? .6

Add a default-router statement to DHCP pool 2. Srv2 cannot communicate with hosts on other subnets because it is not configured with a default router. This is happening because DHCP pool 2 is not configured with a default-router statement. This parameter assigns a default gateway value along with an IP address.

Which of the following describes route summarization?

Combines a contiguous set of addresses into a single address. Route summarization combines a contiguous set of addresses into a single address to reduce network traffic. Route summarization is also referred to as route aggregation.

For each operation on the right, match the appropriate command from the list on the left. Drag

Configure DNS server addresses for the router to use for resolving hostnames. ip name-server Create static entries for hosts that associate each hostname with an IP address. ip host Prevent the router from using DNS to resolve hostnames. no ip domain-lookup Set the DNS name used by the router. hostname

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? .6

Configure a DHCP binding for Srv1.

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? .6

Configure the DHCP server to deliver the default gateway address along with the IP address.

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? (Select two.) .4

Configure the static route to use a network of 10.0.155.64 and a mask of 255.255.255.224. Use 10.0.155.64/28 for the new subnet. For efficient summarization, use 10.0.155.64/28 for the new subnet and configure the static route with a network of 10.0.155.64 and a mask of 255.255.255.224. With the 27-bit mask, the IP address range for the summarized network includes 10.0.155.64 to 10.0.155.96. This includes hosts on both subnets. Using a mask of 255.255.255.192 would include IP addresses from 10.0.155.64 to 10.0.155.127. IP addresses between 96-127 are currently not on any defined subnets, meaning that this route definition would block out addresses that would be wasted. Using a network of 10.0.155.80 for the summarized route is impossible when using a 27-bit or 26-bit mask, as that address is not a valid subnet address for the mask value.

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? (Select two.) .6

Create an address pool with a start address of 192.168.12.2 and end address of 192.168.12.30. Create a DHCP binding for address 192.168.12.30. The DHCP address pool identifies the range of IP addresses that can be assigned by the DHCP server. Because the router itself has been assigned the first IP address on the subnet, the pool range begins at 192.168.12.2. To identify the ending range, you must apply the subnet mask to the subnet to find the ending address. A 27-bit mask provides subnets with 32 addresses per subnet. Removing the last address for the broadcast address, the last address in the range is 192.168.12.30. To assign an IP address to a specific host, define a DHCP binding. The DHCP binding associates the MAC address with the desired IP address. The assigned IP address can be part of the pool range.

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 DNS name resolution looks for information in the following locations in a certain order: Local DNS cache HOSTS file DNS server query

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? .6

DHCP

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? .6

DHCPDISCOVER, DHCPOFFER, DHCPREQUEST, DHCPACK

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

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? (Select two.)

DNS DHCP

Which of the following are characteristics of 6-to-4 tunneling? (Select three.) .5

Dual stack routers Tunnel endpoints configured on routers Works through NAT

Which of the following services automatically creates and deletes DNS host records when an IP address lease is created or released?

Dynamic DNS

Which of the following allow you to disable automatic summarization? (Select two.) .4

EIGRP RIP2 With automatic summarization, the router identifies adjacent networks and calculates the summarized route. Auto-summarization is supported on classless and classful routing protocols. Auto-summarization uses the default class boundary to summarize routes. RIP (version 1 and version 2) and EIGRP support auto-summarization; OSPF does not. For RIPv2 and EIGRP, you can disable automatic summarization.

Consider the following IPv6 address: FE80:0000:0000:0055:0000:0000:000A:AB00 Which of the following are valid shortened forms of this address? (Select two.) .5

FE80:0000:0000:0055::000A:AB00 FE80::55:0000:0000:A:AB00 Valid shortened forms are: FE80::55:0000:0000:A:AB00 FE80:0000:0000:0055::000A:AB00 (FE80:0000:0000:55::A:AB00 could also be used) Leading 0s within a quartet can be omitted. For example, 0055 can be shortened as 55. Addresses with consecutive zeros can be expressed more concisely by substituting a double-colon for the group of zeros. However, only one set of consecutive 0s can be omitted.

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? .5

FE80::1201:64FF:FEAB:7896 Link-local addresses have a prefix of FE80::/10, meaning that they begin with FE80, FE90, FEA0, or FEB0. On Ethernet networks, the modified EUI-64 format interface ID can be automatically derived from the MAC address using the following process: The MAC address is split into 24-bit halves. The hex constant FFFE is inserted between the two halves to complete the 64-bit address.For example, 10-01-64-AB-78-96 becomes 1001:64FF:FEAB:7896 . The seventh bit of the MAC address (reading from left to right) is set to binary 1. This bit is called the universal/local (U/L) bit. Modifying the seventh binary bit modifies the second hex value in the address. For a MAC address of 10-01-64-AB-78-96, the first two hex values translate to the binary number of 0001 0000. Setting the seventh bit to 1 yields 0001 0010, which translates into 12 hex. In this example, the MAC address of 10-01-64-AB-78-96 in modified EUI-64 format becomes 1201:64FF:FEAB:7896. Addresses with a FC00::/7 prefix are unique local addresses.

Which of the following IPv6 addresses is used by a host to contact a DHCP server? .5

FF02::1:2 is the IPv6 address used to contact a DHCP server. All addresses with the FF00::/8 prefix are multicast addresses. IPv6 uses multicasts instead of broadcasts.

Consider the following IPv6 address: FD01:0001:0001:005::7/64 Drag the component parts of this address on the left to the corresponding descriptions on the right. Not all descriptions on the right have corresponding components on the left. .5

Global Routing Prefix FD01:0001:0001:005 Subnet ID :005 Interface ID ::7 Prefix Length /64 Global ID Unique Local Unicast Prefix FD The IPv6 address FD01:0001:0001:005::7/64 is a unique local unicast address. As such, it is composed of the following component parts: Unique Local Unicast Prefix: FD Global Routing Prefix: FD01:0001:0001:005 Subnet ID: 005 Interface ID: ::7 Prefix Length: /64

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? .5

Global unicast addressing Explanation Global unicast addressing should be used in this scenario because internet access is required by network hosts. Global unicast addressing uses registered addresses and is equivalent to public addressing in IPv4. Because the addresses are registered with IANA, no other organization can use them on any public network, including the internet.

Which of the following statements about the dynamic host configuration protocol (DHCP) are true? (Select two.) .6

It can deliver other configuration information in addition to IP addresses. A DHCP server assigns addresses to requesting hosts.

You have configured DHCP on your router. A partial configuration is shown below: hostname RouterA!interface FastEthernet0/0ip address 192.168.11.1 255.255.255.0speed autoduplex autoip access-group 1 in!interface FastEthernet0/1no ip addressspeed autoduplex auto!ip dhcp excluded-address 192.168.11.1 192.168.11.50ip dhcp excluded-address 192.168.12.1 192.168.12.50!ip dhcp pool 0network 192.168.11.0 255.255.255.0domain-name westsim.comdns-server 192.168.11.2 192.168.12.2default-router 192.168.11.1!ip dhcp pool 1network 192.168.12.0 255.255.255.0domain-name westsim.comdns-server 192.168.12.2 192.168.11.2default-router 192.168.12.1!ip dhcp pool 2host 192.168.12.166hardware-address 02c7.f800.0422!access-list 1 permit 192.168.11.0 0.0.0.255! 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? .6

It will not be assigned an IP address.

Match the DNS components on the left with its function on the right.

Managed by the Internet Corporation of Assigned Names and Numbers (ICANN). Top-level domain Includes the host name and all domain names separated by periods. Fully qualified domain name The part of a domain name that represents a specific host. : Hostname Has a complete copy of all the records for a particular domain. Authoritative server The last part of a domain name. Top-level domain Denotes a fully qualified, unambiguous domain name. . (dot) domain

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? .4

Manual With manual summarization, an administrator identifies the summarized route to advertise. The route you specify includes the summarized subnet address with the subnet mask that includes all summarized subnets. This reduces the size of the routing tables in the network. With automatic summarization, the router identifies adjacent networks and calculates the summarized route. This method doesn't reduce the size of the routing tables. auto-summary and ip summary-address are route summarization commands, not methods.

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? .5

NAT-PT The only solution that allows IPv4 hosts to communicate with the IPv6 server without running IPv6 on the client systems is Network Address Translation-Protocol Translation (NAT-PT). NAT-PT converts the IPv6 packet header into an IPv4 packet header, and vice versa. The device references a translation table as it converts the headers to ensure the packet is sent to the correct host.

When using the ip summary-address command, which of the following is true? .4

Neighboring devices only have a summary route in their routing tables. Neighboring devices only have a summary route in their routing tables. The command should be used on outgoing interfaces. The command adds a summary route to the routing table with the route's next-hop interface set to null0.

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

The following commands have been executed on a router: Router(config-router)#no auto-summaryRouter(config-router)#exitRouter(config)#int fa 0/1Router(config-if)#ip summary-address rip 172.16.0.0 255.255.0.0 Which interface type is fa 0/1? .4

Outbound ip summary-address rip 172.16.0.0 255.255.0.0 configures a summary address on a specified interface. Use this command on outbound interfaces of the appropriate routers. The neighboring device will have only a summary route in its routing table. If the neighboring devices receive a query packet for a network that matches the summary route, they send a network a.b.c.d/m unreachable message in response and do not extend the query packets any further. This command adds a summary route to the routing table with the route's next-hop interface set to null0.

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? .3

Place all hosts on the same subnet. Use a mask of 255.255.254.0.

Listed below are several DNS record types. Match the record type on the left with its function on the right.

Points a hostname to an IPv4 address. A Provides alternate names to hosts that already have a host record. CNAME Points an IP address to a hostname. PTR Points a hostname to an IPv6 address. AAAA Identifies servers that can be used to deliver mail. MX

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? .4

Router(config-router)#no auto-summary no auto-summary disable automatic summarization if you have a network address (such as 10.0.0.0) subnetted into smaller subnets and separated by a network with a different classful network address (such as 12.0.0.0).

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? (Select two.)

RouterB will forward broadcast packets sent to the: Time, DNS, BOOTP, and TFTP ports. The hosts may receive their IP address information through DHCP.

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?.2

SubnetA = 125, SubnetB = 0, SubnetC = 13

You 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? .3

SubnetA = 255.255.255.192 SubnetB = 255.255.255.224 SubnetC = 255.255.255.128

If dynamic DNS is being used, which of the following events will cause a dynamic update of the host records? (Select two.)

The ipconfig /registerdns command is entered on a workstation. The DHCP server renews an IP address lease.

While calculating how many subnets are available for a given IP address and subnet mask, when should you use the 2^n - 2 formula? (Select two.).2

The no ip subnet zero command is configured. The network uses a classful routing protocol, such as RIP version 1 or IGRP.

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? (Select two.) .3

Wrk1_A = 192.168.111.62 Wrk5_C = 10.155.64.97 For Wrk1_A, use 192.168.111.62; for Wrk5_C, use 10.155.64.97. SubnetA uses a 27-bit mask. The subnet used by the router has a subnet address of 192.168.111.32 with a broadcast address of 192.168.111.63. SubnetC uses a 28-bit mask. The subnet used by the router has a subnet address of 10.155.64.96 with a broadcast address of 10.155.64.111. Hosts on the same subnet must have IP addresses within the subnet range. Neither the subnet address nor the broadcast address can be assigned to hosts.

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? .6

ip address dhcp

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? .4

ip route 192.168.100.64 255.255.255.192 192.168.100.34 The summarized route will use the subnet address of 192.168.100.64 with a mask of 255.255.255.192. When you summarize routes, you use a smaller subnet mask. This means the mask must be 27 bits or smaller. Converting the last octet of each subnet that must be summarized gives you: 80 = 01010000 96 = 01100000 This means that the subnet address is 01000000 (64), and the mask value is 11000000 (192). You cannot use a subnet address of 192.168.100.80 because this is not a valid subnet address for a 26-bit mask. Valid addresses are multiples of 64 (0, 64, 128, 192). You cannot use a mask value of 255.255.255.224 with network 192.168.100.80 because this is not a valid subnet for that mask. A better design in this scenario would be to use subnet addresses of 192.168.100.96/28 and 192.168.100.112/28. This would allow you to summarize both routes as 192.168.100.96/27.

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. Which interface configuration command would you use to do this? .5

ipv6 address FD01:A001:0001:0003::/64 eui-64 The ipv6 address FD01:A001:0001:0003::/64 eui-64 command statically assigns an interface ID to a router interface connected to the FD01:A001:0001:0003::/64 subnet using the MAC address of the router interface. When you use the eu-64 option with the ipv6 address command, only the 64-bit network prefix for the address needs to be specified. The last 64 bits are automatically computed from the interface's MAC address. The ipv6 address FD01:A001:0001:0003::1/64 command statically assigns an interface ID of 0000:0000:0000:0001 to the router interface. This is a valid interface ID for the subnet, but it does not use the MAC address of the router interface. The ipv6 address FD01:A001:0001:0002::1/64, ipv6 address FD01:A001:0001:0002::/64 eui-64, and ipv6 address FD01:A001:0001:0003::/48 eui-64 commands specify the wrong subnet for the scenario.