CCNA 2 7-9
CCNA 2 Quiz: Master DHCP and IPv6
Test your knowledge on essential networking concepts with our CCNA 2 quiz, focusing on DHCP and IPv6 protocols. This quiz consists of 46 carefully crafted questions designed to enhance your understanding and prepare you for certification exams.
Key Features:
- Covering crucial topics like DHCP assignment, IPv6 configuration, and router operations.
- Multiple choice and checkbox format to challenge your knowledge.
- Instant feedback on answers to aid your learning process.
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
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
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
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
Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server?
DHCPACK
DHCPDISCOVER
DHCPOFFER
DHCPREQUEST
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
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
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
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
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.
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.
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
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.
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
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
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
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.
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.
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.
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.
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 >
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.
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.
Refer to the exhibit. PC-A is unable to receive an IPv6 address from the stateful DHCPv6 server. What is the problem?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.
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.
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.
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
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.
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
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.
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
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
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
Which FHRP implementation is a nonproprietary IPv4-only election protocol with limited scalability?
VRRPv2
GLBP for IPv6
GLBP
IRDP
Which FHRP implementation is a Cisco-proprietary protocol that suppports IPv6 load balancing?
GLBP for IPv6
GLBP
VRRPv3
IRDP
Which FHRP implementation is a Cisco-proprietary protocol that suppports IPv4 load sharing?
GLBP
VRRPv3
GLBP for IPv6
VRRPv2
Which FHRP implementation is a nonproprietary protocol which relies on ICMP to provide IPv4 redundancy?
IRDP
GLBP for IPv6
GLBP
VRRPv3
Which FHRP implementation is a nonproprietary IPv4-only election protocol which has one master router per group?
VRRPv2
HSRP for IPv6
VRRPv3
GLBP
Which FHRP implementation is Cisco-proprietary and permits only one router in a group to forward IPv6 packets?
HSRP for IPv6
HSRP
VRRPv2
VRRPv3
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
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
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
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
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.
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.
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Router
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