Cisco Semester 2, CH 7-9 Quiz Questions

Which two ICMPv6 messages are used in the SLAAC process?

-Router Solicitation -Router Advertisement

Under which two circumstances would a router usually be configured as a DHCPv4 client?

-This is an ISP requirement -The router is intended to be used as a SOHO gateway

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

Client Hardware Address

What message informs IPv6 enabled interfaces to use stateful DHCPv6 for obtaining an IPv6 address?

The ICMPv6 Router Advertisement

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

broadcast DHCPREQUEST

An IPv6-enabled router is to acquire its IPv6 GUA from a DHCPv6 server. Which interface configuration command should be configured on client router? -ipv6 address autoconfig -ipv6 address auto config -ipv6 address dhcp -ipv6 address dhcpv6

ipv6 address dhcp

Which command should be configured on a router interface to set the router as a stateful DHCPv6 client?

ipv6 address dhcp

Which command is configured on the client LAN interface of the DHCPv6 relay agent?

ipv6 dhcp relay destination

Which command must be configured on a router to enable it to join the IPv6 all-routers multicast address ff02::2?

ipv6 unicast-routing

Which address type is automatically created by default on a host interface when no RAs are received?

link-local address

A company uses DHCP to manage IP address deployment for employee workstations. The IT department deploys multiple DHCP servers in the data center and uses DHCP relay agents to facilitate the DHCP requests from workstations. Which two UDP ports are used to forward DHCP traffic?

-67 -68

Which three DHCPv6 roles can a router perform?

-Client -Relay Agent -Server

What two methods can be used to generate an interface ID by an IPv6 host that is using SLAAC?

-EUI-64 -Random

A network administrator is overseeing the implementation of first hop redundancy protocols. Which two protocols are Cisco proprietary? (Choose two.) -IRDP -HSRP -VRRPv2 -VRRP -GLBP

-GLBP -HSRP

A network administrator is analyzing the features that are supported by different first-hop router redundancy protocols. Which statement is a feature that is associated with GLBP? -It is nonproprietary. -GLBP allows load balancing between routers. -It works together with VRRP. -It uses a virtual router master.

-GLBP allows load balancing between routers.

A user needs to add redundancy to the routers in a company. What are the three options the user can use?

-HSRP -GLBP -VRRP

Which FHRPs are Cisco-proprietary? (Choose two.) -IRDP -HSRP -HSRP for IPv6 -VRRPv2

-HSRP -HSRP for IPv6

Which two protocols provide gateway redundancy at Layer 3? (Choose two.) -HSRP -RSTP -PVST -VRRP -STP

-HSRP -VRRP

A network administrator is analyzing the features that are supported by different first-hop router redundancy protocols. Which statement describes a feature that is associated with HSRP? -It uses ICMP messages in order to assign the default gateway to hosts. -HSRP uses active and standby routers. -It allows load balancing between a group of redundant routers. -HSRP is nonproprietary.

-HSRP uses active and standby routers.

When first hop redundancy protocols are used, which two items will be shared by a set of routers that are presenting the illusion of being a single router?

-IP Address -MAC Address

What is the most likely scenario in which the WAN interface of a router would be configured as a DHCP client to be assigned a dynamic IP address from an ISP? -There is a web server for public access on the LAN that is attached to the router. -It is a SOHO or home broadband router. -The router is configured as a DHCP server. -The router is also the gateway for a LAN.

-It is a SOHO or home broadband router.

What is an advantage of configuring a Cisco router as a relay agent?

It can provide relay services for multiple UDP services.

What is the purpose of HSRP?

It provides continuous network connection when a router fails

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

It sends an ICMPv6 Neighbor Solicitation message with the IPv6 address as the target IPv6 address.

A network administrator is analyzing first-hop router redundancy protocols. What is a characteristic of VRRPv3?

It supports IPv6 and IPv4 Addressing

What M flag setting indicates that stateful DHCPv6 is used?

M=1

A company uses the method SLAAC to configure IPv6 addresses for the workstations of the employees. A network administrator configured the IPv6 address on the LAN interface of the router. The interface status is UP. However, the workstations on the LAN segment did not obtain the correct prefix and prefix length. What else should be configured on the router that is attached to the LAN segment for the workstations to obtain the information?​

R1(config)# ipv6 unicast-routing

What DHCPv6 message does a host send to the DHCPv6 server if it is using stateful DHCPv6?

REQUEST

Which ICMPv6 message is sent by a host in an attempt to locate an online IPv6enabled router to obtain IPv6 addressing information?

Router Solicitation

Which command will allow a network administrator to check the IP address that is assigned to a particular MAC address?

Router# show ip dhcp binding

In which alternative to DHCPv6 does a router dynamically provide IPv6 configuration information to hosts?

SLAAC

Which method best describes stateless DHCP?

SLAAC with stateless DHCPv6 Server

What DHCPv6 message does a host send to look for a DHCPv6 server?

SOLICIT

A small coffee shop is offering free Wi-Fi to customers. The network includes a wireless router and a DSL modem that is connected to the local phone company. What method is typically used to configure the connection to the phone company?

Set the WAN connection in the wireless router as a DHCP client.

During which HSRP state does an interface begin sending periodic hello messages?

Speak

When a client is requesting an initial address lease from a DHCP server, why is the DHCPREQUEST message sent as a broadcast?

The client may have received offers from multiple servers, and the broadcast serves to implicitly decline those other offers.

After booting, a client receives an ICMPv6 RA message with the M flag set to 0 and the O flag set to 1. What does this indicate?

The client should automatically configure an IPv6 address and then contact a DHCPv6 server for more information.

What is one indication that a Windows computer did not receive an IPv4 address from a DHCP server?

The computer receives an IP address that starts with 169.254.

After a host has generated an IPv6 address by using the DHCPv6 or SLAAC process, how does the host verify that the address is unique and therefore usable?

The host sends an ICMPv6 neighbor solicitation message to the DHCP or SLAAC-learned address and if no neighbor advertisement is returned, the address is considered unique.

A company uses the SLAAC method to configure IPv6 addresses for the employee workstations. Which address will a client use as its default gateway?​

The link-local address of the router interface that is attached to the network

Which is a characteristic of the HSRP learn state?

The router has not determined the virtual IP address

Which FHRP implementation is a nonproprietary IPv4-only election protocol which has one master router per group?

VRRPv2

Which nonproprietary protocol provides router redundancy for a group of routers which support IPv4 LANs?

VRRPv2

In FHRP terminology, what represents a set of routers that present the illusion of a single router to hosts?

Virtual Router

Which statement is true about DHCP operation?​ -A client must wait for lease expiration before it sends another DHCPREQUEST message.​ -The DHCPDISCOVER message contains the IP address and subnet mask to be assigned, the IP address of the DNS server, and the IP address of the default gateway.​ -If the client receives several DHCPOFFER messages from different servers, it sends a unicast DHCPREQUEST message to the server from which it chooses to obtain the IP information. -When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.​ Navigation Bar

When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.​

What is a result when the DHCP servers are not operational in a network?

Workstations are assigned with IP addresses in the 169.254.0.0/16 network.

Which kind of message is sent by a DHCP client when its IP address lease has expired?​

a DHCPREQUEST unicast message​

Which command is not configured in stateless DHCPv6?

address prefix ipv6-address/prefix

An administrator issues the commands: Router(config)# interface g0/1 Router(config-if)# ip address dhcp What is the administrator trying to achieve?

configuring the router to obtain IP parameters from a DHCPv4 server

What type of device routes traffic destined to network segments beyond the source network segment for which the sending node may not have explicit routing information?

default gateway

If more than one DHCP server is available on the local network, in which order will DHCP messages be sent between a host and a DHCP server?

discover, offer, request, acknowledgement

Which is a DHCPv4 address allocation method that assigns IPv4 addresses for a limited lease period?

dynamic allocation

What device that is part of a virtual router group assigned to the role of default gateway?

forwarding router

Which set of commands will configure a router as a DHCP server that will assign IPv4 addresses to the 192.168.100.0/23 LAN while reserving the first 10 and the last addresses for static assignment?

ip dhcp excluded-address 192.168.100.1 192.168.100.10 ip dhcp excluded-address 192.168.100.254 ip dhcp pool LAN-POOL-100 network 192.168.100.0 255.255.254.0 ip default-gateway 192.168.100.1

An IPv6-enabled router is to acquire its IPv6 GUA from another IPv6 router using SLAAC. Which interface configuration command should be configured on the client router?

ipv6 address autoconfig

Which DHCPv6 verification command would display the link-local and GUA assigned address for each active client?

show ipv6 dhcp binding

What device presents the illusion of a single router to hosts on a LAN segment but actually represents a set of routers working together?

virtual router

A network administrator is entering the command ipv6 unicast-routing to start configuring DHCPv6 operation on a router. Which statement describes the function of this command? -It is required for sending ICMPv6 RA messages. -It is required to configure stateless DHCPv6 server on the router. -It is required for enabling DNS service in DHCPv6 configurations. -It is required to configure stateful DHCPv6 server on the router.

-It is required for sending ICMPv6 RA messages.

The address pool of a DHCP server is configured with 10.19.44.0/24. The network administrator reserves 6 IP addresses for servers. How many IP addresses are left in the pool to be assigned to other hosts?

248

What is the destination IP address when an IPv4 host sends a DHCPDISCOVER message?

255.255.255.255

Which destination IPv4 address does a DHCPv4 client use to send the initial DHCP Discover packet when the client is looking for a DHCP server?

255.255.255.255

What UDP port do DHCPv6 clients use to send DHCPv6 messages?

547

How is a DHCPDISCOVER transmitted on a network to reach a DHCP server? A DHCPDISCOVER message is sent with the broadcast IP address as the destination address.

A DHCPDISCOVER message is sent with the broadcast IP address as the destination address.

What are the flag settings when a host should use the SLAAC only option?

A=1, M=0, O=0

What flag settings combination is used for stateless DHCP?

A=1, M=0, O=1

What method is used by a host to verify an IPv6 address is unique on the local network before assigning that address to an interface?

DAD

What process is used in ICMPv6 for a host to verify that an IPv6 address is unique before configuring it on an interface?

DAD

Which DHCP IPv4 message contains the following information? Destination address: 255.255.255.255 Client IPv4 address: 0.0.0.0 Default gateway address: 0.0.0.0 Subnet mask: 0.0.0.0

DHCPDISCOVER

Which message is sent by a DHCPv4 client to initiate the lease obtaining process?

DHCPDISCOVER

What kind of message is sent by a DHCPv4 client requesting an IP address?

DHCPDISCOVER broadcast message

Which two DHCPv4 messages are sent by the server in the lease obtaining process?

DHCPOFFER DHCPACK

As a DHCPv4 client lease is about to expire, what is the message that the client sends the DHCP server?

DHCPREQUEST

Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server?

DHCPREQUEST

Which two DHCPv4 messages are used in the lease renewal process?

DHCPREQUEST DHCPACK

A DHCP-enabled client PC has just booted. During which two steps will the client PC use broadcast messages when communicating with a DHCP server?

DHCPREQUEST DHCPDISCOVER

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

DHCPv6 Information-Request

Which destination IP address is used when an IPv6 host sends a DHCPv6 SOLICIT message to locate a DHCPv6 server?

FF02::1:2

True or False? If a router with a higher HSRP priority joins the network, it will take over the active router roll from an existing active router which has a lower priority.

False

A network engineer is configuring a LAN with a redundant first hop to make better use of the available network resources. Which protocol should the engineer implement?

GLBP

Which statement describes HSRP?​ -It is used within a group of routers for selecting an active device and a standby device to provide gateway services to a LAN. -It uses ICMP to allow IPv4 hosts to locate routers that provide IPv4 connectivity to remote IP networks.​ -It is an open standard protocol. -If the virtual router master fails, one router is elected as the virtual router master with the other routers acting as backups. Navigation Bar

-It is used within a group of routers for selecting an active device and a standby device to provide gateway services to a LAN.

A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address?

-It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.

Which statement describes a characteristic of GLBP? -It provides automatic rerouting if any router in the group fails. -It provides load balancing for a maximum of four gateways. -It provides multiple virtual IP addresses and multiple virtual MAC addresses. -It does not provide support for IPv6.​

-It provides automatic rerouting if any router in the group fails.

A network administrator configures a router to send RA messages with M flag as 0 and O flag as 1. Which statement describes the effect of this configuration when a PC tries to configure its IPv6 address? -It should contact a DHCPv6 server for the prefix, the prefix-length information, and an interface ID that is both random and unique. -It should contact a DHCPv6 server for all the information that it needs. -It should use the information that is contained in the RA message and contact a DHCPv6 server for additional information. -It should use the information that is contained in the RA message exclusively.

-It should use the information that is contained in the RA message and contact a DHCPv6 server for additional information.

What are two characteristics of the SLAAC method for IPv6 address configuration? (Choose two.) -This stateful method of acquiring an IPv6 address requires at least one DHCPv6 server. -The default gateway of an IPv6 client on a LAN will be the link-local address of the router interface attached to the LAN. -IPv6 addressing is dynamically assigned to clients through the use of ICMPv6. -Clients send router advertisement messages to routers to request IPv6 addressing. -Router solicitation messages are sent by the router to offer IPv6 addressing to clients.

-The default gateway of an IPv6 client on a LAN will be the link-local address of the router interface attached to the LAN. -IPv6 addressing is dynamically assigned to clients through the use of ICMPv6.

Which command, when issued in the interface configuration mode of a router, enables the interface to acquire an IPv4 address automatically from an ISP, when that link to the ISP is enabled? -ip address dhcp -service dhcp -ip dhcp pool -ip helper-address

-ip address dhcp

A router is to provide DHCPv6 server services. Which command should be configured on the client facing interface? -ipv6 enable -ipv6 dhcp pool POOL-NAME -ipv6 dhcp server POOL-NAME -ipv6 nd other-config-flag

-ipv6 dhcp server POOL-NAME

Which method would an IPv6-enabled host using SLAAC employ to learn the address of the default gateway? -neighbor advertisements that are eceived from link neighbors -reply messages that are received from the DHCPv6 server -advertise messages that are received from the DHCPv6 server -router advertisements that are received from the link router

-router advertisements that are received from the link router

What is the default HSRP priority?

100

What is a potential disadvantage when implementing HSRP as compared to GLBP?

HSRP does not provide load balancing with multiple active routers

What device is part of a virtual router group assigned the role of alternate default gateway?

standby router

What is the reason why the DHCPREQUEST message is sent as a broadcast during the DHCPv4 process?

to notify other DHCP servers on the subnet that the IP address was leased