Modules 7 - 9: Available and Reliable Networks Exam

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

VRRPv2

Which FHRP implementation is a nonproprietary IPv4-only election protocol with limited scalability?

VRRPv2

the new forwarding router assumes both the IP and MAC addresses of the virtual router.

step 4

DHCPv6 advertise

step 2

The address pool of a DHCP server is configured with 172.18.93.0/25. The network administrator reserves 10 IP addresses for web servers. How many IP addresses are left in the pool to be assigned to other hosts?

116

The address pool of a DHCP server is configured with 10.92.71.0/25. The network administrator reserves 8 IP addresses for servers. How many IP addresses are left in the pool to be assigned to other hosts?

118

The address pool of a DHCP server is configured with 10.3.2.0/24. The network administrator reserves 3 IP addresses for printers. How many IP addresses are left in the pool to be assigned to other hosts?

251

The address pool of a DHCP server is configured with 192.168.234.0/27. The network administrator reserves 22 IP addresses for IP phones. How many IP addresses are left in the pool to be assigned to other hosts?

8

GLBP

A Cisco proprietary FHRP that provides load sharing in addition to redudancy

HSRP

A Cisco proprietary FHRP that provides redundancy through the use of an active device and standby device.

A host PC is attempting to lease an address through DHCP. What message is sent by the server to let the client know it is able to use the provided IP information?

DHCPACK

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

DHCPREQUEST

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? (Choose two.)

Dhcpdiscover Dhcprequest

A company uses DHCP servers to dynamically assign IPv4 addresses to employee workstations. The address lease duration is set as 5 days. An employee returns to the office after an absence of one week. When the employee boots the workstation, it sends a message to obtain an IP address. Which Layer 2 and Layer 3 destination addresses will the message contain?

FF-FF-FF-FF-FF-FF and 255.255.255.255

Which FHRP implementation is a Cisco-proprietary protocol that suppports IPv4 load sharing?

GLBP

Which FHRP implementation is a Cisco-proprietary protocol that suppports IPv6 load balancing?

GLBP for IPv6

Which FHRP implementation is Cisco-proprietary and permits only one router in a group to forward IPv6 packets?

HSRP for IPv6

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?

HSRP uses active and standby routers.

Which FHRP implementation is a nonproprietary protocol which relies on ICMP to provide IPv4 redundancy?

IRDP

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

It can provide relay services for multiple UDP services.

. 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.

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

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

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.

DCHPv6 Solicit

Step 1

What is the result of a network technician issuing the command ip dhcp excluded-address 10.0.15.1 10.0.15.15 on a Cisco router?

The Cisco router will exclude 15 IP addresses from being leased to DHCP clients.

Order the DHCP messages types as they would occur between a DHCP client and DHCP server?

The DCHP Offer message is used by a server to offer a lease to a client. The DHCP Request message is used to identify both the specific DHCP server and the lease that the client is accepting The DHCPACK message is used by a server to finalize a successful lease with a client. The DHCPNAK message is used when an offered lease is no longer.

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 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

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

a DHCPREQUEST unicast message​

VRRP

an open standard FHRP that provides redundancy through use of a virtual routers master and one or more backups.

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

broadcast DHCPREQUEST

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

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

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 192.168.101.254 ip dhcp pool LAN-POOL-100 network 192.168.100.0 255.255.254.0 default-router 192.168.100.1

the forwarding router fails

step 1

the standby router stops seeing hello messages from the forwarding router.

step 2

DCHPv6 request

step 3

the standby router assumes the role of the forwarding router.

step 3

DHCPv6 reply

step 4

What information can be verified through the show ip dhcp binding command?

the IPv4 addresses that are assigned to hosts by the DHCP server

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