Sun Certified Solaris 9.0 System and Network Administrator AllinOne Exam Guide [Electronic resources] نسخه متنی

1.

Why is there a need for production systems to be able to regularly synchronize their clocks?

1. 
   

   To ensure data consistency in enterprise applications



2. 
   

   To ensure that time is printed correctly to users



3. 
   

   To ensure that machines can independently estimate time



4. 
   

   To ensure that an external hardware clock is required for every system

2.

What is the purpose of NTP?

1. 
   

   To allow every system to have their own external hardware clock



2. 
   

   To allow time to be synchronized between all systems on a network by using multicast



3. 
   

   To prevent access to primary time servers by network clients



4. 
   

   To filter timestamps and prevent their dispersion at the router level

3.

What kind of approach allows one server on the network to be delegated the authority for timekeeping for all systems on that network?

1. 
   

   Peer-to-peer



2. 
   

   Star topology



3. 
   

   Net topology



4. 
   

   Master-slave

4.

What is the major new feature of NTP v3?

1. 
   

   It supports a method for servers to communicate with a set of peer servers to average offsets and achieve a more accurate estimation of current time.



2. 
   

   It supports native public-key cryptography.



3. 
   

   It supports packet filtering firewalls.



4. 
   

   It permits up to 1,024 secondary servers per primary server.

5.

What is the name of the Solaris NTP daemon?.

1. 
   

   ntp



2. 
   

   ntpd



3. 
   

   xntpd



4. 
   

   nntpd

6.

Where is the sample NTP server configuration file located?

1. 
   

   /etc/inet/ntp.server
   



2. 
   

   /etc/inet/ntp.server.sample
   



3. 
   

   /etc/inet/ntp.sample
   



4. 
   

   /etc/inet/ntp.conf.sample
   

7.

What is the name of the command to start the NTP daemon in debug mode?

1. 
   

   ntp -d
   



2. 
   

   ntpd -d
   



3. 
   

   xntpd -d
   



4. 
   

   nntpd -d
   

8.

What is the Leap Indicator?

1. 
   

   Flag that indicates a leap year at the end of the day.



2. 
   

   NTP v3.



3. 
   

   Determines whether the message is symmetric active, symmetric passive, client, server, broadcast, or an NTP control message.



4. 
   

   Level of accuracy for the message, with 1 being a primary server and 2-255 indicating secondary servers of decreasing accuracy.

9.

What is the Version Indicator?

1. 
   

   Flag that indicates a leap year at the end of the day.



2. 
   

   NTP v3.



3. 
   

   Determines whether the message is symmetric active, symmetric passive, client, server, broadcast, or an NTP control message.



4. 
   

   Level of accuracy for the message, with 1 being a primary server and 2-255 indicating secondary servers of decreasing accuracy.

10.

What is the Mode?

1. 
   

   Flag that indicates a leap year at the end of the day.



2. 
   

   NTP v3.



3. 
   

   Determines whether the message is symmetric active, symmetric passive, client, server, broadcast, or an NTP control message.



4. 
   

   Level of accuracy for the message, with 1 being a primary server and 2-255 indicating secondary servers of decreasing accuracy.

11.

What is the Stratum?

1. 
   

   Flag that indicates a leap year at the end of the day.



2. 
   

   NTP v3.



3. 
   

   Determines whether the message is symmetric active, symmetric passive, client, server, broadcast, or an NTP control message.



4. 
   

   Level of accuracy for the message, with 1 being a primary server and 2-255 indicating secondary servers of decreasing accuracy.

12.

What is the Poll Interval?

1. 
   

   Maximum time separating messages



2. 
   

   Local clock precision



3. 
   

   Delay anticipated between the primary and other sources



4. 
   

   Error estimate from the primary source

13.

What is the Precision?

1. 
   

   Maximum time separating messages



2. 
   

   Local clock precision



3. 
   

   Delay anticipated between the primary and other sources



4. 
   

   Error estimate from the primary source

14.

What is the Root Delay?

1. 
   

   Maximum time separating messages



2. 
   

   Local clock precision



3. 
   

   Delay anticipated between the primary and other sources



4. 
   

   Error estimate from the primary source

15.

What is the Root Dispersion?

1. 
   

   Maximum time separating messages



2. 
   

   Local clock precision



3. 
   

   Delay anticipated between the primary and other sources



4. 
   

   Error estimate from the primary source