Ch10 DHCP - Practical

Question 1

Excluding IPv4 addresses in DHCPv4

Answer 1

ip dhcp excluded-address low_address [high_address]

Global Config Command

Question 2

Command used to create DHCPv4 Address Pool

Answer 2

ip dhcp pool dhcp_pool_name

// puts prompt into (dhcp_config)# mode.

Question 3

Defining Default Gateway in DHCPv4 Config Mode

Answer 3

default-router address1 [address2 … address8]

DHCP-Config Cmd

Question 4

Define DHCPv4 Address Pool

Answer 4

network network_number [mask | /prefix_length]

DHCP Config Command

Question 5

Two Required Tasks to Setup DHCPv4

Answer 5

1. Define the address pool.
2. Define the default router or gateway.

Question 6

Four Optional Tasks to Setup DHCPv4

Answer 6

1. Define DNS Server
2. Define the Domain Name.
3. Define the duration of the DHCP lease.
4. Define the NetBIOS WINS server.

Question 7

Command to stop DHCP Server Function

Answer 7

no service dhcp

Global Config Command

Question 8

Command to re/enable DHCP Server Function

Answer 8

service dhcp

Global Config Command

Question 9

Define DNS Server DHCPv4

Answer 9

dns-server dns_address [address2…address8]

Question 10

Define the Domain Name DHCPv4

Answer 10

domain-name domain_name

DHCP-Config Command

Question 11

Define the Duration of the DHCP Lease DHCPv4

Answer 11

lease { days [hours] [minutes] | infinite ]

Question 12

Define the NetBIOS WINS Server DHCPv4

Answer 12

netbios-name-server address1 [address2….address8]

Question 13

What is the default value of a DNS lease?

Answer 13

1 day.

Question 14

4 Methods to Verify DHCPv4 Configuration

Answer 14

1. show running-config | section dhcp
2. show ip dhcp binding
3. show ip dhcp server statistics
4. ipconfig /all // client side

Question 15

Command Used to Display DHCP Commands Only in Running-Config

Answer 15

show running-config | section dhcp

Question 16

Command to display list of all IPv4 address to MAC address bindings that have been created by DHCPv4.

Answer 16

show ip dhcp binding

Question 17

Command used to verify messages are being sent or received by the router.

Answer 17

show ip dhcp server statistics

Question 18

Two Steps for Setting Router as DHCP Relay Agent

Answer 18

1. interface interface_id
2. ip helper-address dhcp_server_address

Question 19

Three Steps to Configure Router as a DHCPv4 Client

Answer 19

1. interface interface_id
2. ip address dhcp
3. no shutdown

Question 20

Command used to display address conflicts in DHCP

Answer 20

show ip dhcp conflict

Question 21

Command that can determine if DHCP messages are not reaching destination.

Answer 21

debug ip dhcp server events

Question 22

Commands used to Re-Enable SLAAC on an interface.

Answer 22

1. no ipv6 nd managed-config flag
2. no ipv6 nd other-config flag

Question 23

Command used to enable Stateless DHCPv6 by setting O flag to 1

Answer 23

ipv6 nd other-config-flag

Question 24

Command used to enable Stateful DHCPv6 by setting M Flag to 1.

Answer 24

ipv6 nd managed-config-flag

Question 25

Configure Router as Stateless DHCPv6 Server (7)

Answer 25

1. **ipv6 unicast-routing** 2. **ipv6 dhcp pool** *pool\_name* 3. **dns-server** *dns\_server\_address* 4. **domain-name** *domain\_name* 5. **interface** *interface\_id* 6. **ipv6 dhcp server** *pool\_name* 7. **ipv6 nd other-config-flag**

Question 26

Configuring Router as Stateless DHCPv6 Client (3)

Answer 26

1. **interface** *interface\_id* 2. **ipv6 enable** // used when a global unicast address is not on the router. 3. **ipv6 address autoconfig** // enables SLAAC

Question 27

4 Methods to Verify Stateless DHCPv6

Answer 27

1. **show ipv6 dhcp pool** 2. **show running-config** 3. **show ipv6 interface** *interface\_id* 4. **debug ipv6 dhcp detail**

Question 28

Configure Router as Stateful DHCP Server. (8)

Answer 28

1. **ipv6 unicast-routing** 2. **ipv6 dhcp pool** *pool\_name* 3. **address prefix** *ipv6\_prefix* [**lifetime** {*valid\_lifetime preferred\_lifetime | infinite* }] 4. **dns-server** *dns\_name* 5. **domain-name** *domain\_name* 6. **interface** *interface\_id* 7. **ipv6 dhcp server** *pool\_name* 8. **ipv6 nd managed-config-flag**

Question 29

Configure Router as Stateful DHCPv6 Client (3)

Answer 29

1. **interface** *interface\_id* 2. **ipv6 enable** 3. **ipv6 address dhcp**

Question 30

3 Methods to Verify Stateful DHCPv6 Server

Answer 30

1. **show ipv6 dhcp pool** 2. **show ipv6 dhcp binding** 3. **show ipv6 interface** *interface\_id*

Question 31

Configure Router as a DHCPv6 Relay Agent (2)

Answer 31

1. **interface** *interface\_id* 2. **ipv6 dhcp relay destination** *dhcpv6\_server\_address*

Question 32

Command Used to Verify Receipt and Transmission of DHCPv6 messages.

Answer 32

**debug ipv6 dhcp detail**