DHCP Questions CCNA 200-120

When a DHCP server is configured, which two IP addresses should never be assignable to hosts? (Choose
A. network or subnetwork IP address
B. broadcast address on the network
C. IP address leased to the LAN
D. IP address used by the interfaces
E. manually assigned address to the clients
F. designated IP address to the DHCP server

Correct Answer: AB

Network or subnetwork IP address (for example or and broadcast address (for example should never be assignable to hosts. When try to assign these addresses to hosts, you will
receive an error message saying that they can’t be assignable.

Which two tasks does the Dynamic Host Configuration Protocol perform? (Choose two)
A. Set the IP gateway to be used by the network.
B. Perform host discovery used DHCPDISCOVER message.
C. Configure IP address parameters from DHCP server to a host.
D. Provide an easy management of layer 3 devices.
E. Monitor IP performance using the DHCP server.
F. Assign and renew IP address from the default pool.

Correct Answer: CF

How does a DHCP server dynamically assign IP address to host?
A. Addresses are allocated after a negotiation between the server and the host to determine the length of the
B. Addresses are assigned for a fixed period of time. At the end of period, a new quest for an address must be
made, and another address is then assigned.
C. Addresses are leased to host. A host will usually keep the same address by periodically contacting the
DHCP sever to renew the lease.
D. Addresses are permanently assigned so that the host uses the same address at all times.

Correct Answer: C

Which statement is correct regarding the operation of DHCP?
A. A DHCP client uses a ping to detect address conflicts.
B. A DHCP server uses a gratuitous ARP to detect DHCP clients.
C. A DHCP client uses a gratuitous ARP to detect a DHCP server.
D. If an address conflict is detected, the address is removed from the pool and an administrator must resolve
the conflict.
E. If an address conflict is detected, the address is removed from the pool for an amount of time configurable
by the administrator.
F. If an address conflict is detected, the address is removed from the pool and will not be reused until the
server is rebooted.

Correct Answer: D

An address conflict occurs when two hosts use the same IP address. During address assignment, DHCP
checks for conflicts using ping and gratuitous ARP. If a conflict is detected, the address is removed from the
pool. The address will not be assigned until the administrator resolves the conflict.

Which characteristics are representative of a link-state routing protocol? (Choose three)
A. provides common view of entire topology
B. exchanges routing tables with neighbors
C. calculates shortest path
D. utilizes event-triggered updates
E. utilizes frequent periodic updates

Correct Answer: ACD


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