Introduction to Linux II Chapter 10

Introduction to Linux II Chapter 10 Exam Answer

  1. Question ID 1258

    The system clock calculates time as number of seconds elapsed since:

    • 01-Jan-2000 00:00:00
    • 01-Jan-1980 00:00:00
    • The base time set at the time of installation
    • 01-Jan-1970 00:00:00
  2. Question ID 1259

    The reference time that the system time is calculated from is known as:

    • UTC
    • Epoch time
    • GMT
    • Base time
  3. Question ID 1260

    The system clock contains both time and time zone information.

    True or False?

    • True
    • False
  4. Question ID 1261

    The battery-powered clock, which keeps time when the system is shut down, is known as the:

    • System clock
    • Battery time
    • Hardware clock
    • Base clock
  5. Question ID 1262

    When the system boots, the system clock is set using the value of the hardware clock.

    True or False?

    • True
    • False
  6. Question ID 1263

    When the Linux computer was shut down, the system clock indicated 11:30:17. What will be the time of the hardware clock immediately after shutdown?

    • Varies from time zone to time zone
    • 11:30:17
    • Hardware clock will show UTC time
    • Local time
  7. Question ID 1265

    A software application that is dependent on both hardware and system clocks is failing. A possible reason could be:

    • Software license has expired
    • System clock and hardware clocks are out of sync
    • Time zone has changed
    • There are multiple rtc files under /dev
  8. Question ID 1266

    Which of the following commands will set the system time to the same time as the hardware clock?

    • hwclock –s
    • hwclock –set –date “current system time”
    • hwclock –w
    • hwclock –r
  9. Question ID 1268

    Amount of time the hardware clock gains or loses on a regular rate is known as:

    • Clock cycle change
    • Delta time
    • Clock gain
    • Clock drift
  10. Question ID 1269

    In the last six months, the administrator had to adjust the hardware clock on three different occasions. He can find information regarding past clock values from which file?

    • /etc/adjtime
    • /dev/rtc0
    • /dev/rtc1
    • /etc/localtime
  11. Question ID 1270

    The date command is used for:

    • Setting the system date and time
    • Assigning filenames with timestamps suffixed to them in scripts
    • Viewing current date and time
    • All choices are valid
  12. Question ID 1271

    The date command can show the time only in 0-23 hour format.

    True or False?

    • True
    • False
  13. Question ID 1274

    NTP stands for:

    • Network Time Protocol
    • New Time Protocol
    • No Testing Parameter
    • New Time zone Parser
  14. Question ID 1275

    The reference time used by NTP is:

    • UTC
    • Local time on the primary server
    • GMT + 0.5
    • CMOS clock time
  15. Question ID 1276

    The precision provided by NTP is on the order of:

    1. Tens of million seconds
    2. 1 hour
    3. 1 second
    4. 1 millisecond
  16. Question ID 1277

    Instead of running ntpd as a daemon, the administrator wants to run it as a background process. Which of the following options should be used?

    • –c
    • –q
    • –n
    • –g
  17. Question ID 1278

    The /etc/ntp.conf file shows that NTP servers are being queried using iburst mode. This enables:

    • Sending a burst of three requests instead of one if the server is unreachable
    • Checking the closest server first
    • Speeding up of initial synchronization
    • Finding time even if the server is unreachable
  18. Question ID 1279

    Which of the following options, when used with the ntpd command, will perform a one time synchronization:

    • –g
    • –c
    • –N
    • –q
  19. Question ID 1281

    The /etc/ntp.conf file lists three servers for querying. Two of them return the time 10:54:23 while the third one shows a different time (i.e. 10:50:37). The system will use which of the return values?

    • It will use the time of the server that was queried first
    • It will use 10:54:23 since this is what the majority of servers indicate
    • It will use 10:50:37 if this is closer to the system’s current time
    • It will use an average of the time
  20. Question ID 1283

    Two NTP servers are used by ntpd; one runs Stratum-2 clock while the other uses Stratum-4. Which one is considered to be more accurate?

    • Stratum-4
    • It is impossible to tell by the Stratum number
    • Stratum-2
    • Both are equally accurate
  21. Question ID 1285

    To verify if a NTP server is available, which of the following commands should be executed?

    • ntpdate –q
    • ntpdate
    • ntpdate –t
    • ntpdate –p

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