Ccna certification Practice Tests

A.  The A record

B.  The CName record

C.  The PTR record

D.  The AAAA record

 27.  What gets appended to hostname queries for DNS resolution?

A.  The DNS domain name

B.  The DNS zone

C.  The host header

D.  The hostname PTR record

 28.  Which is the most secure method of name resolution for routers and switches?

A. DNS

B.  PTR records

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C.  Static hostname entries

D. LLMNR

 29.  Which type of DNS record holds the IPv4 IP address for a hostname?

A.  The A record

B.  The CName record

C.  The PTR record

D.  The AAAA record

 30.  What limits the amount of time that a DNS entry is available in the DNS cache?

A.  An A record

B. TTL

C. SOA

D.  Default of 5 minutes

 31.  Which message is sent from the DHCP client to the DHCP server to confirm the offer of 

an IP address?

A. Acknowledgment

B. Discover

C. Offer

D. Request

 32.  What form of communication does a DHCP client use to initially acquire an IP address?

A.  Layer 3 broadcast

B.  Layer 3 multicast

C.  Layer 3 802.1Q

D.  Layer 3 unicast

 33.  At what point of the lease time will the client ask for a renewal of the IP address from the 

DHCP server?

A.  One-quarter of the lease

B.  One-half of the lease

C.  Seven-eighths of the lease

D.  End of the lease

 34.  Which statement is correct about the DHCP process?

A.  The DHCP server is responsible for maintaining the life cycle of an IP address.

B.  DHCP uses multicasting between the client and server.

C.  The DHCP client is responsible for maintaining the life cycle of an IP address.

D.  The DHCP lease is negotiated between client and server.

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