Ccna certification Practice Tests

A.  Tunnel interface

B.  NTP interface

C.  Loopback interface

D.  Switched Virtual Interface (SVI)

 23.  Which command will configure NTP to use the internal loopback interface?

A. 

Switch(config)#ntp source loopback 0

B. 

Switch(config)#ntp loopback 0

C. 

Switch(config)#ntp master loopback 0

D. 

Switch(config)#ntp clock loopback 0

 24.  Which command will set the router’s internal clock to 2:24 August 1, 2019?

A. 

Router(config)#clock set 2:24:00 1 august 2019

B. 

Router#clock set 2:24:00 1 august 2019

C. 

Router(config)#clock set 2:24:00 august 1 2019

D. 

Router#clock 2:24:00 1 august 2019

 25.  Which statement is correct about reverse lookups?

A.  A reverse lookup is when the request needs to be reversed to another DNS server.

B.  A reverse lookup is the resolution of an IP address to FQDN.

C.  A reverse lookup is when the DNS queried can answer the request without asking 

another DNS server.

D.  A reverse lookup is the resolution of an FQDN to an IP address.

 26.  Which record type is used for an IPv4 address mapping to FQDN for DNS queries?