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CCNA2 v6.0 Chapter eight Exam Answers 2018 2019

  1. Which DHCPv4 message will a client ship to accept an IPv4 address that is offered by a DHCP server?

    • unicast DHCPACK
    • broadcast DHCPACK
    • unicast DHCPREQUEST
    • broadcast DHCPREQUEST
      Explanation:

      When a DHCP client receives DHCPOFFER messages, information technology will transport a broadcast DHCPREQUEST message for two purposes. First, it indicates to the offering DHCP server that it would similar to accept the offer and demark the IP address. Second, it notifies any other responding DHCP servers that their offers are declined.

  2. A visitor uses DHCP servers to dynamically assign IPv4 addresses to employee workstations. The address lease duration is set equally 5 days. An employee returns to the office subsequently an absenteeism of one week. When the employee boots the workstation, information technology sends a message to obtain an IP address. Which Layer 2 and Layer 3 destination addresses will the bulletin incorporate?

    • FF-FF-FF-FF-FF-FF and 255.255.255.255
    • both MAC and IPv4 addresses of the DHCP server
    • MAC address of the DHCP server and 255.255.255.255
    • FF-FF-FF-FF-FF-FF and IPv4 address of the DHCP server
      Caption:

      When the lease of a dynamically assigned IPv4 address has expired, a workstation will send a DHCPDISCOVER message to offset the process of obtaining a valid IP accost. Because the workstation does not know the addresses of DHCP servers, it sends the bulletin via circulate, with destination addresses of FF-FF-FF-FF-FF-FF and 255.255.255.255.

  3. Which is a DHCPv4 accost resource allotment method that assigns IPv4 addresses for a limited charter menstruation?

    • manual allotment
    • pre-allocation
    • automatic allotment
    • dynamic allocation
      Explanation:

      Dynamic allocation is the most commonly implemented allotment mechanism. It leases the IP parameters for a predefined flow of time.

  4. Which accost does a DHCPv4 server target when sending a DHCPOFFER message to a client that makes an address request?

    • client IP address
    • customer hardware address
    • gateway IP address
    • circulate MAC address
      Caption:

      When a DHCPv4 customer does not have an IPv4 address, a DHCPv4 server will send a DHCPOFFER bulletin back to the client hardware address of the requesting DHCPv4 client.

  5. As a DHCPv4 customer lease is nigh to elapse, what is the message that the customer sends the DHCP server?

    • DHCPDISCOVER
    • DHCPOFFER
    • DHCPREQUEST
    • DHCPACK
      Explanation:

      When a DHCP customer lease is about to expire, the client sends a DHCPREQUEST bulletin to the DHCPv4 server that originally provided the IPv4 accost.​ This allows the customer to request that the charter be extended.​

  6. What is an advantage of configuring a Cisco router as a relay amanuensis?

    • Information technology will permit DHCPDISCOVER letters to pass without amending.
    • It can frontwards both broadcast and multicast messages on behalf of clients.
    • It can provide relay services for multiple UDP services.
    • It reduces the response time from a DHCP server.
      Explanation:

      Past default, the ip helper-accost command forrard the following eight UDP services:Port 37: Time
      Port 49: TACACS
      Port 53: DNS
      Port 67: DHCP/BOOTP client
      Port 68: DHCP/BOOTP server
      Port 69: TFTP
      Port 137: NetBIOS name service
      Port 138: NetBIOS datagram service

  7. What is the result of a network technician issuing the command ip dhcp excluded-address 10.0.fifteen.1 10.0.15.15 on a Cisco router?

    • The Cisco router will exclude 15 IP addresses from being leased to DHCP clients.
    • The Cisco router volition allow simply the specified IP addresses to be leased to clients.
    • The Cisco router will exclude but the 10.0.15.one and 10.0.xv.fifteen IP addresses from beingness leased to DHCP clients.
    • The Cisco router volition automatically create a DHCP pool using a /28 mask.
      Caption:

      The ip dhcp excluded-address command is followed past the commencement and the last addresses to be excluded from beingness leased to DHCP clients.

  8. An administrator problems the commands:

    Router(config)# interface g0/1
    Router(config-if)# ip address dhcp

    What is the administrator trying to achieve?

    • configuring the router to human activity as a DHCPv4 server
    • configuring the router to obtain IP parameters from a DHCPv4 server
    • configuring the router to act equally a relay amanuensis
    • configuring the router to resolve IP address conflicts
      Explanation:

      The ip address dhcp command activates the DHCPv4 customer on a given interface. By doing this, the router will obtain the IP parameters from a DHCPv4 server.

  9. Nether which ii circumstances would a router usually be configured as a DHCPv4 client? (Choose 2.)

    • The router is intended to be used as a SOHO gateway.
    • The administrator needs the router to deed every bit a relay agent.
    • The router is meant to provide IP addresses to the hosts.
    • This is an ISP requirement.
    • The router has a fixed IP address.
      Explanation:

      SOHO routers are oftentimes required by the Internet access provider to be configured equally DHCPv4 clients in order to exist connected to the provider.

  10. A visitor uses the SLAAC method to configure IPv6 addresses for the employee workstations. Which accost will a customer use every bit its default gateway?​

    • the all-routers multicast address
    • the link-local accost of the router interface that is attached to the network
    • the unique local accost of the router interface that is attached to the network
    • the global unicast address of the router interface that is attached to the network
      Explanation:

      When a PC is configured to use the SLAAC method for configuring IPv6 addresses, information technology will use the prefix and prefix-length data that is independent in the RA message, combined with a 64-flake interface ID (obtained by using the EUI-64 procedure or by using a random number that is generated by the customer operating system), to form an IPv6 accost. It uses the link-local accost of the router interface that is attached to the LAN segment as its IPv6 default gateway address.

  11. A network administrator configures a router to send RA messages with M flag as 0 and O flag as 1. Which argument describes the consequence of this configuration when a PC tries to configure its IPv6 address?

    • It should contact a DHCPv6 server for all the data that information technology needs.
    • Information technology should employ the data that is contained in the RA message exclusively.
    • Information technology should utilize the information that is independent in the RA message and contact a DHCPv6 server for additional data.
    • It should contact a DHCPv6 server for the prefix, the prefix-length information, and an interface ID that is both random and unique.
      Explanation:

      ICMPv6 RA messages contain two flags to indicate whether a workstation should use SLAAC, a DHCPv6 server, or a combination to configure its IPv6 address. These two flags are M flag and O flag. When both flags are 0 (past default), a customer must but apply the data in the RA message. When G flag is 0 and O flag is 1, a client should utilise the information in the RA bulletin and look for the other configuration parameters (such every bit DNS server addresses) on DHCPv6 servers.

  12. A company implements the stateless DHCPv6 method for configuring IPv6 addresses on employee workstations. Afterward a workstation receives messages from multiple DHCPv6 servers to indicate their availability for DHCPv6 service, which bulletin does information technology send to a server for configuration data?

    • DHCPv6 SOLICIT
    • DHCPv6 Asking
    • DHCPv6 Advertise
    • DHCPv6 INFORMATION-REQUEST
      Explanation:

      In stateless DHCPv6 configuration, a customer configures its IPv6 address by using the prefix and prefix length in the RA bulletin, combined with a self-generated interface ID. It then contacts a DHCPv6 server for additional configuration information via an Data-REQUEST message. The DHCPv6 SOLICIT message is used by a customer to locate a DHCPv6 server. The DHCPv6 ADVERTISE bulletin is used by DHCPv6 servers to indicate their availability for DHCPv6 service. The DHCPv6 REQUEST bulletin is used by a client, in the stateful DHCPv6 configuration, to request ALL configuration information from a DHCPv6 server.

  13. An administrator wants to configure hosts to automatically assign IPv6 addresses to themselves by the use of Router Advertizing messages, merely also to obtain the DNS server accost from a DHCPv6 server. Which address assignment method should be configured?

    • SLAAC
    • stateless DHCPv6
    • stateful DHCPv6
    • RA and EUI-64
      Explanation:

      Stateless DHCPv6 allows clients to use ICMPv6 Router Advertisement (RA) letters to automatically assign IPv6 addresses to themselves, but so allows these clients to contact a DHCPv6 server to obtain additional information such as the domain proper noun and address of DNS servers. SLAAC does not let the customer to obtain additional information through DHCPv6, and stateful DHCPv6 requires that the client receive its interface accost direct from a DHCPv6 server. RA messages, when combined with an EUI-64 interface identifier, are used to automatically create an interface IPv6 address, and are part of both SLAAC and stateless DHCPv6.

  14. How does an IPv6 client ensure that it has a unique address after it configures its IPv6 address using the SLAAC resource allotment method?

    • Information technology sends an ARP bulletin with the IPv6 address as the destination IPv6 address.
    • It checks with the IPv6 address database that is hosted by the SLAAC server.
    • It contacts the DHCPv6 server via a special formed ICMPv6 bulletin.
    • It sends an ICMPv6 Neighbor Solicitation message with the IPv6 accost as the target IPv6 address.
      Caption:

      SLAAC is a stateless resource allotment method and does not use a DHCP server to manage the IPv6 addresses. When a host generates an IPv6 address, information technology must verify that information technology is unique. The host volition send an ICMPv6 Neighbor Solicitation message with its own IPv6 address every bit the target. As long as no other device responds with a Neighbor Advertisement message, and then the address is unique.

  15. What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface?

    • the MAC accost of the IPv6 enabled interface
    • a randomly generated 64-scrap hexadecimal accost
    • an IPv6 accost that is provided by a DHCPv6 server
    • an IPv4 address that is configured on the interface
      Explanation:

      The EUI-64 procedure uses the MAC address of an interface to construct an interface ID (IID). Because the MAC address is only 48 bits in length, 16 additional bits (FF:FE) must be added to the MAC address to create the total 64-bit interface ID.

  16. What two methods tin can exist used to generate an interface ID by an IPv6 host that is using SLAAC? (Choose two.)

    • EUI-64
    • random generation
    • stateful DHCPv6
    • DAD
    • ARP
      Explanation:

      A host that is using SLAAC has two ways to configure an interface ID: EUI-64 and random generation past the host operating system.

  17. Refer to the exhibit. Based on the output that is shown, what kind of IPv6 addressing is beingness configured?

    CCNA 2 RSE 6.0 Chapter 8 Exam Answers 2018 2019 03

    CCNA ii RSE 6.0 Affiliate 8 Test Answers 2018 2019 03

    • SLAAC
    • stateful DHCPv6
    • stateless DHCPv6
    • static link-local
      Explanation:

      Stateful DHCPv6 pools are configured with address prefixes for hosts via the address control, whereas stateless DHCPv6 pools typically only contain information such every bit DNS server addresses and the domain name. RA messages that are sent from routers that are configured equally stateful DHCPv6 servers accept the M flag gear up to ane with the command ipv6 nd managed-config-flag, whereas stateless DHCPv6 servers are indicated by setting the O flag to one with the ipv6 nd other-config-flag command.

  18. Refer to the showroom. What should be done to allow PC-A to receive an IPv6 address from the DHCPv6 server?

    CCNA 2 RSE 6.0 Chapter 8 Exam Answers 2018 2019 02

    CCNA 2 RSE 6.0 Chapter 8 Exam Answers 2018 2019 02

    • Add the ipv6 dhcp relay command to interface Fa0/0.
    • Configure the ipv6 nd managed-config-flag command on interface Fa0/1.
    • Modify the ipv6 nd managed-config-flag command to ipv6 nd other-config-flag.
    • Add the IPv6 accost 2001:DB8:1234:5678::ten/64 to the interface configuration of the DHCPv6 server.
      Explanation:

      Client DHCPv6 letters are sent to a multicast address with link-local telescopic, which ways that the messages will not be forwarded by routers. Because the customer and server are on different subnets on different interfaces, the bulletin will non attain the server. The router can exist configured to relay the DHCPv6 messages from the client to the server past configuring the ipv6 dhcp relay command on the interface that is connected to the client.

  19. Refer to the exhibit. A network ambassador is implementing stateful DHCPv6 operation for the company. Notwithstanding, the clients are not using the prefix and prefix-length information that is configured in the DHCP pool. The administrator issues a bear witness ipv6 interface command. What could be the crusade of the problem?

    CCNA 2 RSE 6.0 Chapter 8 Exam Answers 2018 2019 04

    CCNA 2 RSE 6.0 Chapter 8 Exam Answers 2018 2019 04

    • No virtual link-local address is configured.
    • The Indistinguishable Accost Detection feature is disabled.
    • The router is configured for SLAAC DHCPv6 operation.
    • The router is configured for stateless DHCPv6 performance
      Caption:

      The router is configured for stateless DHCPv6 operation, which is shown past the last two lines of the show control output. Hosts will configure their IPv6 addresses past using the prefix information that is provided past RA letters. They will also obtain additional configuration data from a DHCPv6 server. The "No virtual link-local accost" option and the "Indistinguishable Address Detection" option are irrelevant to DHCP configuration. Choice "SLAAC configuration" is incorrect because by definition SLAAC will use merely the information that is provided by RA messages to configure IPv6 settings.

  20. Refer to the showroom. A network ambassador is implementing the stateless DHCPv6 operation for the company. Clients are configuring IPv6 addresses equally expected. Nevertheless, the clients are not getting the DNS server address and the domain name information configured in the DHCP pool. What could exist the cause of the problem?

    CCNA 2 RSE 6.0 Chapter 8 Exam Answers 2018 2019 01

    CCNA 2 RSE six.0 Chapter viii Exam Answers 2018 2019 01

    • The GigabitEthernet interface is non activated.
    • The router is configured for SLAAC functioning.
    • The DNS server address is not on the same network every bit the clients are on.
    • The clients cannot communicate with the DHCPv6 server, evidenced by the number of active clients being 0.
      Explanation:

      The router is configured for SLAAC operation because there is no configuration command to modify the RA G and O flag value. Past default, both Grand and O flags are gear up to 0. In order to permint stateless DHCPv6 operation, the interface command ipv6 nd other-config-flag should exist issued. The GigabitEthernet interface is in working status because clients can get RA messages and configure their IPv6 addresses as expected. Also, the fact that R1 is the DHCPv6 server and clients are getting RA messages indicates that clients can communicate with the DHCP server. The number of active clients is 0 because the DHCPv6 server does non maintain the land of clients IPv6 addresses (it is not configured for stateful DHCPv6 operation). The DNS server accost issue is non relevant to the trouble.

  21. Fill up in the blank. Do not abbreviate.

    Type a command to exclude the start fifteen useable IP addresses from a DHCPv4 address pool of the network x.0.15.0/24.

    Router(config)# ip dhcp excluded-address 10.0.xv.i ten.0.15.15

  22. Society the steps of configuring a router as a DHCPv4 server. (Not all options are used.)

    • Question

      CCNA2 v6.0 Chapter 8 Exam Q001

      CCNA2 v6.0 Chapter 8 Exam Q001

    • Answer

      CCNA2 v6.0 Chapter 8 Exam A001

      CCNA2 v6.0 Chapter 8 Examination A001

  23. Match the descriptions to the corresponding DHCPv6 sever blazon. (Not all options are used.)

    • Question

      CCNA2 v6.0 Chapter 8 Exam Q002

      CCNA2 v6.0 Affiliate 8 Test Q002

    • Reply

      CCNA2 v6.0 Chapter 8 Exam A002

      CCNA2 v6.0 Chapter 8 Test A002