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CGS3767 FINAL EXAM STUDY
GUIDE QUESTIONS &
ANSWERS(RATED A+)
What does the wget command do? - ANSWERIs a terminal mode command used to download files thru the URL In our class program 2, how many RAM chips where in the computer we used as an example - ANSWER Name three Virtual Machines Software, as explained in class - ANSWERVMware, Virtual Box, Parallels What is a nibble number - ANSWERthe equivalent of one hexadecimal number How many bits does a nibble contain - ANSWER As taught in this class, what new benefit the System.out.printf provide us? - ANSWERAllows to easily align reports in columns Why is terminal mode important in IT(Information Technology)? - ANSWERit allows us to have full control of our computers In Ubuntu, using terminal mode, create a folder named pgm1 - ANSWERmkdir pgm What is the largest decimal number in one nibble number is: - ANSWER In the following sequence of events, Using Linux terminal mode commands, Create a directory named pgm4,Go into folder pgm4,Display all files and directories - ANSWERmkdir pgm4, cd pgm4, ls In our class program 2, if we display a chip number from the computer we used as an example, what does it mean? - ANSWERThis chip is damaged and needs to be replaced In the following sequence of events, What are the BASES for the following systems: hexadecimal, binary, decimal - ANSWER16, 2, 10 What is a Virtual Machine (VM)? - ANSWERSoftware that can be installed in a Host Computer, allowing us to install multiple Operating Systems, using the Host's hardware Using shell, what does ../../../chmod 755* do? - ANSWERNo such file or directory
Using System.out.printf display the number 3767.01 so that the integer part displays using 12 spaces and the decimal part displays using 4 spaces - ANSWERUsing System.out.printf("%17.4f", 3767.01); In our class program 2, what was the total size of RAM in the computer we used as an example - ANSWER32 gigs In Ubuntu, using terminal mode, move to your pgm1 folder - ANSWERcd pgm What do "java -version" and "javac -version" must have in common? - ANSWERThey have to be the same version Why did we install JDK in our ubuntu VM? - ANSWERNeeded to create our program 2 assignment Name three benefits of Virtual Machines (VMs) - ANSWERVMs can be used to train employees, VM can be cloned, VM can be moved to other computers The decimal value of the binary number 1100 0101 1111 is - ANSWER Name the current Virtual Machines (VMs) used in this class - ANSWERVirtual Box What is the largest decimal number in one Hexadecimal number is: - ANSWER Name the Current Linux text editors explained in this class, used in the ocelot.aul.fiu.edu - ANSWERvi, gedit, nano, pico, vim What is the binary value of the hexadecimal number 164? - ANSWER0001 0110 0100 What is the decimal value of the number 1C7? - ANSWER What is the largest decimal number in one Binary number is: - ANSWER Name three benefits of Virtual Computers - ANSWERCan be moved from one Host to another, If one gets a virus it will not contaminate the others, Easy to clone What is the decimal value of the hexadecimal number AC2 - ANSWER Using shell, enter/append into a new file named robinson.sh your own multi-line comments named anyThing and the name Michael - ANSWERecho "<<anyThing" > robinson.sh echo "Michael" >> robinson.sh echo "anyThing" >> robinson.sh In Windows, using terminal mode, create a folder named pgm1 - ANSWERmkdir pgm The decimal value of the binary number 1101 1101 1100 is - ANSWER
GOTO
while :END Using shell commands, display your current directory name - ANSWERecho "My current directory name is: $PWD"; What is the Major Problems of Virtual Machines explained in this class - ANSWERWhen the host fails all VMs get disconnected OR If the file server fails (turns off, etc) all virtual machines get disconnected Using shell commands, select the command that display a new empty screen - ANSWERclear What is the decimal value of the hexadecimal number AC9 - ANSWER What is the binary value of the decimal number 356 - ANSWER0001 0110 0100 What is the decimal value of the hexadecimal number 9CA - ANSWER Using shell, write the code to append the first 5 lines in x.sh to an existing file named test.txt - ANSWERcat x.sh | head -5 >> test.txt Select the structure of the case shell command - ANSWERcase $CHOICE in esac Using shell, display My user name is ?? Todays date and time is ?? - ANSWERecho "My user name is $USER Todays date and time is date" Using shell, find out and display the total amount of ACGT substrings found in the last 1,995 lines in a file named TheData - ANSWERtail -1995 TheData | grep ACGT - o | wc -l Using shell, write the code to append your last 15 lines in x.sh to your temp file - ANSWERcat x.sh | tail -15 >> temp Write the code to create a for loop in shell - ANSWERfor NUM in $NUMBERS Display the total amount of bytes in a file named abc.dat - ANSWERwc -c abc.dat Using shell, if firstNumber is higher or equal than secondNumber display first number is larger or equal otherwise display second number is larger - ANSWERif [ $firstNumber ] -ge [ $secondNumber ]; then echo "first number is larger or equal" else echo "second number is larger" fi
What is the binary value of the decimal number 765 - ANSWER0010 1111 1101 Using any loop accept 5 numbers, waiting 1 second between each number - ANSWERCOUNTER= while true do sleep 1 COUNTER=expr $COUNTER + 1 echo "Program has been running for $COUNTER seconds..." if [ "$COUNTER" -gt 5 ]; then break fi done Using batch commands, select the command that display a new empty screen - ANSWERcls Name the Numerical systems and their bases, learned in class - ANSWERDecimal 10, Hexadecimal 16, Binary 2 Write the code to create an endless while loop in shell - ANSWERwhile true do done Select the structure of the if shell command - ANSWERif [ $myname == mr ]; then else fi Using Linux terminal mode shell commands, create a shell file named lastName period sh with 0 bytes - ANSWERtouch lastName.sh Using the Windows Batch language, display the label "Type 1, 2, 3, 4 or 0 then press ENTER :"requesting the input of values 1, 2, 3, 4 or 0, then assign the input to the variable named keyboard - ANSWERSET /P keyboard=Type 1, 2, 3, 4 or 0 then press ENTER : How do I offer Tutoring to all my students - ANSWERIn person and online using ZOOM Name the current Virtual Machines (VM) used in this class - ANSWERVirtual Box or/and Parallel Using Shell language, display the label "Type 1, 2, 3, 4 or 0 then press ENTER :" requesting the input of values 1, 2, 3, 4 or 0, then assign the input to the variable named keyboard - ANSWERecho Type 1, 2, 3, 4 or 0 then press ENTER : read keyboard Using shell, append into an existing file named robinson.sh the calculation of the following number 4 *3 - ANSWERecho expr 4 \*3 >> robinson.sh
