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WorksheetsNetacad Exam:Module 7-9 DHCP/FHRP
Total questions: 26
Worksheet time: 13mins
Which statement describes HSRP?
If the virtual router master fails, one router is elected as the virtual router master with the other routers acting as backups.
It uses ICMP to allow IPv4 hosts to locate routers that provide IPv4 connectivity to remote IP networks.
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 is an open standard protocol.
What is the keyword that is displayed on www.netacad.com?
DHCP
Cisco
switch
Router
networking
Which protocol automates assignment of IP addresses on a network, and which port number does it use?
80
67
DHCP
DNS
SMB
What is a result when the DHCP servers are not operational in a network?
Workstations are assigned with the IP address 127.0.0.1.
Workstations are assigned with IP addresses in the 10.0.0.0/8 network.
Workstations are assigned with IP addresses in the 169.254.0.0/16 network.
Workstations are assigned with the IP address 0.0.0.0.
What is an advantage of configuring a Cisco router as a relay agent?
It reduces the response time from a DHCP server.
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.
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.
Windows displays a DHCP timeout message.
The computer cannot ping other devices on the same network with IP addresses in the 169.254.0.0/16 range.
The computer cannot ping 127.0.0.1.
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?
A) MAC address of the DHCP server and 255.255.255.255
B) both MAC and IPv4 addresses of the DHCP server
C) FF-FF-FF-FF-FF-FF and IPv4 address of the DHCP server
D) FF-FF-FF-FF-FF-FF and 255.255.255.255
Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server?
DHCPDISCOVER
DHCPPACK
DHCPOFFER
DHCPREQUEST
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?
DHCPNACK
DHCPPACK
DHCPDISCOVER
DHCPOFFER
DHCPREQUEST
Which kind of message is sent by a DHCP client when its IP address lease has expired?
a DHCPREQUEST broadcast message
a DHCPDISCOVER unicast message
a DHCPDISCOVER broadcast message
a DHCPREQUEST unicast message
A client device on an Ethernet segment needs an IP address in order to communicate on the network. A DHCP server with IP address 192.168.1.1 has been configured and enabled on the network. How will a client device obtain a usable IP address for this network?
Use a statically configured IP address from the pool of IP addresses that is offered by the DHCP server.
Send a DHCPDISCOVER message to physical address FF-FF-FF-FF-FF-FF.
Send a DHCPACK packet to the default gateway address.
Send a DHCPREQUEST packet to IP address 255.255.255.255.
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?
service dhcp
ip dhcp pool
ip address dhcp
ip helper-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?
68
23
53
80
67
PC1 is configured to obtain a dynamic IP address from the DHCP server. PC1 has been shut down for two weeks. When PC1 boots and tries to request an available IP address, which destination IP address will PC1 place in the IP header?
192.168.1.8
192.168.1.1
255.255.255.255
192.168.1.255
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?
dhcp pool LAN-POOL-100 ip dhcp excluded-address 192.168.100.1 192.168.100.9 ip dhcp excluded-address 192.168.100.254 network 192.168.100.0 255.255.254.0 default-router 192.168.101.1
ip dhcp excluded-address 192.168.100.1 192.168.100.9 ip dhcp excluded-address 192.168.101.254 ip dhcp pool LAN-POOL-100 network 192.168.100.0 255.255.255.0 ip default-gateway 192.168.100.1
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 192.168.100.0 255.255.255.0 ip default-gateway 192.168.100.1
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 192.168.101.1
Match the step number to the sequence of stages that occur during the HSRP failover process.
The forwarding router fails.
Step 1
The new forwarding router assumes both the IP and MAC addresses of the virtual router.
Step 4
The standby router assumes the role of the forwarding router.
Step 3
The standby router stops seeing hello messages from the forwarding router.
Step 2
Match the FHRP protocols to the appropriate description.
A Cisco proprietary FHRP that provides load sharing in addition to redundancy
GLBP
An open standard FHRP that provides redundancy through use of a virtual routers master and one or more backups
VRRP
A Cisco proprietary FHRP that provides redundancy through use of an active device and standby device
HSRP
Which destination MAC address is used when frames are sent from the workstation to the default gateway?
MAC address of the virtual router
MAC addresses of both the forwarding and standby routers
MAC address of the forwarding router
MAC address of the standby router
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.
HSRP is nonproprietary.
It allows load balancing between a group of redundant routers.
It uses ICMP messages in order to assign the default gateway to hosts.
A network engineer is troubleshooting host connectivity on a LAN that uses a first hop redundancy protocol. Which IPv4 gateway address should be configured on the host?
192.168.2.0
192.168.2.2
192.168.2.1
192.168.2.100
What protocol can be configured on gateway routers R1 and R2 that will allow traffic from the internal LAN to be load balanced across the two gateways to the Internet?
STP
PVST+
GLBP
PVST
Which FHRP implementation is a nonproprietary protocol which relies on ICMP to provide IPv4 redundancy?
IRDP
VRRPv2
VRRPv3
HSRP for IPv6
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?
255
251
241
252
249
What information can be verified through the show ip dhcp binding command?
the IPv4 addresses that are assigned to hosts by the DHCP server
the IPv4 addresses that have been excluded from the DHCPv4 pool
that DHCPv4 discover messages are still being received by the DHCP server
the number of IP addresses remaining in the DHCP pool
Which statement is true about DHCP operation?
A) A client must wait for lease expiration before it sends another DHCPREQUEST message.
B) 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.
C) 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.
D) 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.
The address pool of a DHCP server is configured with 172.23.143.0/26. The network administrator reserves 14 IP addresses for file servers. How many IP addresses are left in the pool to be assigned to other hosts?
50
61
40
48
58
