Question

Match each DHCP message type with its description.

DHCPDISCOVER → A client initiating a message to find a DHCP server
DHCPOFFER → A DHCP server responding to the initial request by a client
DHCPREQUEST → The client accepting the IP address provided by the DHCP server
DHCPACK → The DHCP server confirming that the address lease has been accepted

Question

Which protocol automates assignment of IP addresses on a network, and which port number does it use? (Choose two.)

DHCP
DNS
SMB
53
67
80

Question

An Ethernet network with three devices is shown. The three devices are labeled as PC1, DHCP Server, and R1 (router). Each device has an IP address. The IP address for PC1 is 192.168.1.130/24, the IP address for the DHCP Server is 192.168.1.8/24, and the IP address for the router FastEthernet interface 0/1 is 192.168.1.1/24.

Refer to the exhibit. 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?

192.168.1.1
192.168.1.8
192.168.1.255
255.255.255.255

Question

Which statement is true about DHCP operation?

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.
A client must wait for lease expiration before it sends another DHCPREQUEST message.
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 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.

Question

Match the purpose with its DHCP message type.

A message that is used to identify the explicit server and lease offer to accept → DHCPREQUEST
A message that is used to locate any available DHCP server on a network → DHCPDISCOVER
A message that is used to suggest a lease to a client → DHCPOFFER
A message that is used to acknowledge that the lease is successful → DHCPACK

Question

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

Question

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

Question

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-if)# ipv6 enable
R1(config)# ipv6 unicast-routing
R1(config-if)# ipv6 nd other-config-flag
R1(config)# ipv6 dhcp pool <name of the pool>

Question

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

Question

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.

Question

Refer to the exhibit. A network administrator is configuring a router for DHCPv6 operation. Which conclusion can be drawn based on the commands?

The DHCPv6 server name is ACAD_CLASS.
The router is configured for stateless DHCPv6 operation.
Clients would configure the interface IDs above 0010.
The router is configured for stateful DHCPv6 operation, but the DHCP pool configuration is incomplete.

Question

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
Router# show ip dhcp pool
Router# show ip dhcp server statistics
Router# show running-config I section_dhcp

Question

A router CLI prompt that says: R1# show running-config <output omitted> ! ipv6 dhcp pool IPV6 dns-server 2001:DB8:1234:5678::100 domain-name netacad.com ! interface FastEthernet0/0 <output omitted> ipv6 nd other-config-flag ipv6 dhcp server IPV6 ! <output omitted>

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

SLAAC
stateful DHCPv6
stateless DHCPv6
static link-local

Question

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

Add the ipv6 dhcp relay command to interface Fa0/0.
Configure the ipv6 nd managed-config-flag command on interface Fa0/1.
Change the ipv6 nd managed-config-flag command to ipv6 nd other-config-flag.
Add the IPv6 address 2001:DB8:1234:5678::10/64 to the interface configuration of the DHCPv6 server.

Question

Refer to the exhibit. PC-A is unable to receive an IPv6 address from the stateful DHCPv6 server. What is the problem?

The ipv6 dhcp relay command should be applied to interface Gig0/0.
The ipv6 nd managed-config-flag should be applied to interface Gig0/1.
The ipv6 nd managed-config-flag command should be ipv6 nd other-config-flag.
The ipv6 dhcp relay command should use the link-local address of the DHCP server.

Question

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

DHCPACK
DHCPDISCOVER
DHCPOFFER
DHCPREQUEST

Question

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 dhcp pool
ip address dhcp
service dhcp
ip helper-address

Question

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 192.168.100.0 255.255.255.0
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 192.168.100.1
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
ip network 192.168.100.0 255.255.254.0
ip default-gateway 192.168.100.1

Question

Match the DHCP message types to the order of the DHCPv4 process.

Step 4 → DHCPACK
Step 3 → DHCPREQUEST
Step 1 → DHCPDISCOVER
Step 2 → DHCPOFFER

Question

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

a DHCPDISCOVER broadcast message
a DHCPREQUEST broadcast message
a DHCPREQUEST unicast message
a DHCPDISCOVER unicast message

Question

Refer to the exhibit. 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
192.168.2.1
192.168.2.2
192.168.2.100

Question

The graphic displays an internal LAN connected to two switches. Each switch has a connection to routers labeled R1 and R2. R1 and R2 act as gateway routers and have a separate connection to the Internet.

Refer to the exhibit. 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
PVST+
GLBP

Question

Refer to the exhibit. A network administrator is implementing the stateless DHCPv6 operation for the company. Clients are configuring IPv6 addresses as expected. However, the clients are not getting the DNS server address and the domain name information configured in the DHCP pool. What could be the cause of the problem?

The GigabitEthernet interface is not activated.
The router is configured for SLAAC operation.
The DNS server address is not on the same network as the clients are on.
The clients cannot communicate with the DHCPv6 server, evidenced by the number of active clients being 0.

Question

Refer to the exhibit. Which destination MAC address is used when frames are sent from the workstation to the default gateway?

MAC address of the forwarding router
MAC addresses of both the forwarding and standby routers
MAC address of the standby router
MAC address of the virtual router

Question

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 is an open standard protocol.
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.

Question

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.
It uses ICMP messages in order to assign the default gateway to hosts.
It allows load balancing between a group of redundant routers.
HSRP is nonproprietary.

Question

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?

DHCPDISCOVER
DHCPOFFER
DHCPREQUEST
DHCPACK
DHCPNACK

Question

Match the DHCP message types to the order of the stateful DHCPv6 process when a client first connects to an IPv6 network.

Step 3 → DHCPv6 REQUEST
Step 1 → DHCPv6 SOLICIT
Step 4 → DHCPv6 REPLY
Step 2 → DHCPv6 ADVERTISE

Question

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.

Question

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 echo request message to the DHCPv6 or SLAAC-learned address and if no reply is returned, the address is considered unique.
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.
The host checks the local neighbor cache for the learned address and if the address is not cached, it it considered unique.
The host sends an ARP broadcast to the local link and if no hosts send a reply, the address is considered unique.

Question

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

Workstations are assigned with the IP address 0.0.0.0.
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.

Question

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

The computer cannot ping 127.0.0.1.
Windows displays a DHCP timeout message.
The computer receives an IP address that starts with 169.254.
The computer cannot ping other devices on the same network with IP addresses in the 169.254.0.0/16 range.

Question

Refer to the exhibit. A network administrator is configuring a router as a DHCPv6 server. The administrator issues a show ipv6 dhcp pool command to verify the configuration. Which statement explains the reason that the number of active clients is 0?

The default gateway address is not provided in the pool.
No clients have communicated with the DHCPv6 server yet.
The IPv6 DHCP pool configuration has no IPv6 address range specified.
The state is not maintained by the DHCPv6 server under stateless DHCPv6 operation.

Question

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.
Set the DSL modem as a DHCP client to get a public IP address from the wireless router.
Set the connection between the wireless router and the DSL modem as a private IP network.
Set the DSL modem as a DHCP client to the phone company and a DHCP server for the internal connection.

Question

What is the reason that an ISP commonly assigns a DHCP address to a wireless router in a SOHO environment?

better connectivity
better network performance
easy IP address management
easy configuration on ISP firewall

Question

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? (Choose two.)

23
53
67
68
80

Question

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

the number of IP addresses remaining in the DHCP pool
the IPv4 addresses that have been excluded from the DHCPv4 pool
that DHCPv4 discover messages are still being received by the DHCP server
the IPv4 addresses that are assigned to hosts by the DHCP server

Question

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?

Send a DHCPREQUEST packet to IP address 255.255.255.255.
Send a DHCPACK packet to the default gateway address.
Send a DHCPDISCOVER message to physical address FF-FF-FF-FF-FF-FF.
Use a statically configured IP address from the pool of IP addresses that is offered by the DHCP server.

Question

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.
The Cisco router will allow only the specified IP addresses to be leased to clients.
The Cisco router will exclude only the 10.0.15.1 and 10.0.15.15 IP addresses from being leased to DHCP clients.
The Cisco router will automatically create a DHCP pool using a /28 mask.

Question

PT Activity

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

What is the keyword that is displayed on www.netacad.com?

DHCP
IPv6
Cisco
Router
switch
networking

Question

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

VRRPv2
GLBP for IPv6
GLBP
IRDP

Question

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

GLBP for IPv6
GLBP
VRRPv3
IRDP

Question

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

GLBP for IPv6
VRRPv3
GLBP
VRRPv2

Question

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

GLBP
VRRPv3
GLBP for IPv6
VRRPv2

Question

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

GLBP
IRDP
GLBP for IPv6
VRRPv3

Question

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

IRDP
GLBP for IPv6
GLBP
VRRPv3

Question

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

IRDP
HSRP for IPv6
VRRPv2
VRRPv3

Question

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

VRRPv2
HSRP for IPv6
VRRPv3
GLBP

Question

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

VRRPv2
HSRP
HSRP for IPv6
VRRPv3

Question

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

HSRP for IPv6
HSRP
VRRPv2
VRRPv3

Question

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
246
238
252
249

Question

The address pool of a DHCP server is configured with 10.19.44.0/24. The network administrator reserves 3 IP addresses for servers. How many IP addresses are left in the pool to be assigned to other hosts?

251
249
241
255
252

Question

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
249
241
255
252

Question

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
114
106
120
117

Question

The address pool of a DHCP server is configured with 192.168.184.0/26. The network administrator reserves 18 IP addresses for access points. How many IP addresses are left in the pool to be assigned to other hosts?

44
46
57
54
36

Question

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?

48
50
61
58
40

Question

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
10
21
18
0

Question

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
116
108
122
119

Question

The address pool of a DHCP server is configured with 10.7.30.0/24. The network administrator reserves 5 IP addresses for printers. How many IP addresses are left in the pool to be assigned to other hosts?

249
247
239
253
250

Question

The address pool of a DHCP server is configured with 172.21.121.0/25. The network administrator reserves 12 IP addresses for web servers. How many IP addresses are left in the pool to be assigned to other hosts?

114
112
104
118
115

Question

Match the step number to the sequence of stages that occur during the HSRP failover process.

Step 4 → The new forwarding router assumes both the IP and MAC addresses of the virtual router.
Step 3 → The standby router assumes the role of the forwarding router.
Step 1 → The forwarding router fails.
Step 2 → The standby router stops seeing hello messages from the forwarding router.

Question

Match the FHRP protocols to the appropriate description.

GLBP → A Cisco proprietary FHRP that provides load sharing in addition to redundancy
HSRP → A Cisco proprietary FHRP that provides redundancy through use of an active device and standby device
VRRP → An open standard FHRP that provides redundancy through use of a virtual routers master and one or more backups