Which NTP command configures the local device as an NTP reference clock source?
A.
ntp peer
B.
ntp broadcast
C.
ntp master
D.
ntp server
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D is correct
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NO , answer is C!
Configure the local device to use a remote NTP clock source.
router(config)#ntp server {ip-address | hostname}
Configure the local device as a NTP reference clock source.
router(config)#ntp master stratum-number
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Router(config)#ntp server ?
A.B.C.D IP address of peer
I think its ntp server. I didn’t see the master option on the router commands.
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The master option is there…
Router(config)#ntp ?
access-group Control NTP access
authenticate Authenticate time sources
authentication-key Authentication key for trusted time sources
broadcastdelay Estimated round-trip delay
clock-period Length of hardware clock tick
logging Enable NTP message logging
master Act as NTP master clock
max-associations Set maximum number of associations
peer Configure NTP peer
server Configure NTP server
source Configure interface for source address
trusted-key Key numbers for trusted time sources
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Last- NTP: NTP is the Network Time Protocol, which is how devices get time updates. A Master server (If you’re using public NTP, there are several of them) uses an atomic clock or GPS signal to keep itself on time. It also passes that time info down to properly configured NTP Peers. An NTP Server, is a router or other device that is authorized to pass on the time info to other devices. They can be several layers deep – meaning: The master passes time data to Router’s 1 and 2. Router 1 is a server, and passes that same data on to Router A and B. Router A passes the info onto a switch. and so on. All the servers, usually have several peers they refer to (other servers) to compare the times across the board. Any that are “insane” are rejected outright. Anyway the command to make a router a server is simply Answer D) which tells the router it is the source of NTP on it’s network. Note: It will have a master for NTP unless it is the master (meaning it has an atomic clock or GPS attached to it.)
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