ICND1 Infrastructure Services 4

Question 1

Which command verifies the current DHCP bindings (leases) on a Cisco IOS DHCP server?

Accepted Answer

show ip dhcp binding

Answer

'show ip dhcp binding' displays all current IP-to-MAC address mappings issued by the Cisco IOS DHCP server.

Question 2

A host receives a 169.254.x.x address. What does this indicate?

Accepted Answer

The host failed to receive a DHCP lease and assigned itself an APIPA address

Answer

169.254.0.0/16 is the APIPA (Automatic Private IP Addressing) range used when a DHCP client cannot reach a server.

Question 3

Which command on a Cisco router excludes the addresses 192.168.1.1 through 192.168.1.10 from being assigned by DHCP?

Accepted Answer

ip dhcp excluded-address 192.168.1.1 192.168.1.10

Answer

'ip dhcp excluded-address' prevents the DHCP server from leasing the specified address range to clients.

Question 4

What type of DNS query does a client send when it wants the DNS server to perform all recursive lookups on its behalf?

Accepted Answer

Recursive query

Answer

A recursive query asks the DNS server to fully resolve the name and return the final answer, performing all necessary additional queries itself.

Question 5

Which command configures a Cisco router to use 8.8.8.8 as its DNS server?

Accepted Answer

ip name-server 8.8.8.8

Answer

'ip name-server' specifies the DNS server(s) that the router will use for hostname resolution.

(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test