Hoofdstuk 8 Flashcards
Which DHCPv4 message will a client send to accept an IPv4 address that is offered by a DHCP server?
unicast DHCPACK broadcast DHCPACK unicast DHCPREQUEST broadcast DHCPREQUEST
broadcast 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 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
FF-FF-FF-FF-FF-FF and 255.255.255.255
Which is a DHCPv4 address allocation method that assigns IPv4 addresses for a limited lease period?
manual allocation pre-allocation automatic allocation dynamic allocation
dynamic allocation
Which address does a DHCPv4 server target when sending a DHCPOFFER message to a client that makes an address request?
client IP address client hardware address gateway IP address broadcast MAC address
client hardware address
As a DHCPv4 client lease is about to expire, what is the message that the client sends the DHCP server?
DHCPDISCOVER DHCPOFFER DHCPREQUEST DHCPACK
DHCPREQUEST
What is an advantage of configuring a Cisco router as a relay agent?
It will allow DHCPDISCOVER messages to pass without alteration. It can forward 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.
It can provide relay services for multiple UDP services.
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 act as a DHCPv4 server configuring the router to obtain IP parameters from a DHCPv4 server configuring the router to act as a relay agent configuring the router to resolve IP address conflicts
configuring the router to obtain IP parameters from a DHCPv4 server
Under which two circumstances would a router usually be configured as a DHCPv4 client? (Choose two.)
The router is intended to be used as a SOHO gateway. The administrator needs the router to act as 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.
The router is intended to be used as a SOHO gateway.
This is an ISP requirement.
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 all-routers multicast address the link-local address of the router interface that is attached to the network the unique local address of the router interface that is attached to the network the global unicast address of the router interface that is attached to the network
the link-local address of the router interface that is attached to the network
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 all the information that it needs. 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. 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 use the information that is contained in the RA message and contact a DHCPv6 server for additional information.
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 SOLICIT DHCPv6 REQUEST DHCPv6 ADVERTISE DHCPv6 INFORMATION-REQUEST
DHCPv6 INFORMATION-REQUEST
An administrator wants to configure hosts to automatically assign IPv6 addresses to themselves by the use of Router Advertisement messages, but also to obtain the DNS server address from a DHCPv6 server. Which address assignment method should be configured?
SLAAC stateless DHCPv6 stateful DHCPv6 RA and EUI-64
stateless DHCPv6
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 ARP message 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 message. It sends an ICMPv6 Neighbor Solicitation message with the IPv6 address as the target IPv6 address.
It sends an ICMPv6 Neighbor Solicitation message with the IPv6 address as the target IPv6 address.
What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface?
the MAC address of the IPv6 enabled interface a randomly generated 64-bit hexadecimal address an IPv6 address that is provided by a DHCPv6 server an IPv4 address that is configured on the interface
the MAC address of the IPv6 enabled interface
What two methods can be used to generate an interface ID by an IPv6 host that is using SLAAC? (Choose two.)
EUI-64
random generation
stateful DHCPv6
DAD
ARP
EUI-64
random generation
