The create queue operation sets the metadata pointers to point to the queue head and sets the count to 0.

Answer the following statement true (T) or false (F)


False

Correct.

Computer Science & Information Technology

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Can you find evidence of that in the log entries shown above? If so in what lines? Explain.

Operating system log file example a. Stored under /var/log, the messages file stores various system events. The connection of new USB drive, a network card becoming available, and too many missed root login attempts, are a few examples of events logged to the /var/log/messages file. Use the more command to display the contents of the /var/log/messages file. Unlike the cat command, more allows for a paced navigation through the file. Press ENTER to advance line-by-line or SPACE to advance an entire page. Press q or CTRL + C to abort and exit more. Your entries will be different than the output shown below.

[analyst@secOps ~]$ sudo more /var/log/messages
[sudo] password for analyst:
Mar 20 08:34:38 secOps kernel: [ 6.149910] random: crng init done
Mar 20 08:34:40 secOps kernel: [ 8.280667] floppy0: no floppy controllers found
Mar 20 08:34:40 secOps kernel: [ 8.280724] work still pending
Mar 20 08:35:16 secOps kernel: [ 44.414695] hrtimer: interrupt took 5346452
ns
Mar 20 14:28:29 secOps kernel: [21239.566409] pcnet32 0000:00:03.0 enp0s3: link
down
Mar 20 14:28:33 secOps kernel: [21243.404646] pcnet32 0000:00:03.0 enp0s3: link
up, 100Mbps, full-duplex
Mar 20 14:28:35 secOps kernel: [21245.536961] pcnet32 0000:00:03.0 enp0s3: link
down
Mar 20 14:28:43 secOps kernel: [21253.427459] pcnet32 0000:00:03.0 enp0s3: link
up, 100Mbps, full-duplex
Mar 20 14:28:53 secOps kernel: [21263.449480] pcnet32 0000:00:03.0 enp0s3: link
down
Mar 20 14:28:57 secOps kernel: [21267.500152] pcnet32 0000:00:03.0 enp0s3: link
up, 100Mbps, full-duplex
Mar 20 14:29:01 secOps kernel: [21271.551499] pcnet32 0000:00:03.0 enp0s3: link
down
Mar 20 14:29:05 secOps kernel: [21275.389707] pcnet32 0000:00:03.0 enp0s3: link
up, 100Mbps, full-duplex
Mar 22 06:01:40 secOps kernel: [ 0.000000] Linux version 4.8.12-2-ARCH
(builduser@andyrtr) (gcc version 6.2.1 20160830 (GCC) ) #1 SMP PREEMPT Fri Dec
2 20:41:47 CET 2016
Mar 22 06:01:40 secOps kernel: [ 0.000000] x86/fpu: Supporting XSAVE feature
0x001: 'x87 floating point registers'
Mar 22 06:01:40 secOps kernel: [ 0.000000] x86/fpu: Supporting XSAVE feature
0x002: 'SSE registers'
Mar 22 06:01:40 secOps kernel: [ 0.000000] x86/fpu: Supporting XSAVE feature
0x004: 'AVX registers'
Mar 22 06:01:40 secOps kernel: [ 0.000000] x86/fpu: xstate_offset[2]: 576,
xstate_sizes[2]: 256
Mar 22 06:01:40 secOps kernel: [ 0.000000] x86/fpu: Enabled xstate features
0x7, context size is 832 bytes, using 'standard' format.
Mar 22 06:01:40 secOps kernel: [ 0.000000] x86/fpu: Using 'eager' FPU context
switches.

Notice that the events listed above are very different from the web server events. Because the operating system itself is generating this log, all recorded events are in relation to the OS itself. b. If necessary, enter Ctrl + C to exit out of the previous command. c. Log files are very important for troubleshooting. Assume that a user of that specific system reported that all network operations were slow around 2:30pm.

Computer Science & Information Technology

What is the name of the panel that lists all of the graphics files placed in an InDesign document?

A. Links panel B. Tags panel C. Library panel D. Graphics panel

Computer Science & Information Technology

Layout containers help you arrange GUI components. A VBox arranges its nodes________.

a. left to right b. by best fit c. vertically from top to bottom d. None of the above.

Computer Science & Information Technology

Answer the following statements true (T) or false (F)

1. A base class's constructors are inherited into its derived classes. 2. The first task of any base class’s constructor is to call its derived class’s constructor. 3. To call the base-class default constructor explicitly, the call to a base-class constructor must be the first statement in the derived-class-constructor definition. 4. When you call an Overridable base class method on a derived class object, the base class version of the method executes. This is the basis of polymorphism. 5. When a program creates a derived-class object, the Object constructor is the last constructor called and the first whose body finishes executing.

Computer Science & Information Technology