Sample Exam 3

True/False

Indicate whether the sentence or statement is true or false.

____          1.   The head section of a Web page defines what appears within the browser window.

____          2.   Two dollar signs ($$) next to one another is Perl's numeric relational operator that stands for equality.

____          3.   In C, customer_name is an example of a legal identifier.

____          4.   Key words have special meanings so you cannot use them as names for variables or functions.

Modified True/False

Indicate whether the sentence or statement is true or false.  If false, change the identified word or phrase to make the sentence or statement true.

____          5.   The loopback feature allows your UNIX or Linux system to access its own internal network configuration instead of an external network. _________________________

____          6.   Most high-level programming languages, such as Perl, use filehandles to reference files. _________________________

____          7.   Scalar variable names begin with a(n) # sign. _________________________

____          8.   Identifiers are names given to variables and functions. _________________________

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

____          9.   Which of the following operators tests two numeric values for “not equal to”?

____          10.  When used in a double-quoted string, which of the following control characters places a horizontal tab in the displayed output?

____          11.  In the Awk program, which of the following options tells the shell that the program is being called with a script file that contains the awk command?

____          12.  Which of the following format specifiers to printf() represents a signed decimal integer?

____          13.  The first character in a C identifier must be either a letter or a(n) ____.

Yes/No

Indicate whether you agree with the sentence or statement.

____          14.  Does Awk require a programmer to explicitly set up looping structures to search through a file?

____          15.  Are C programs made up of a single large function?

Completion

Complete each sentence or statement.

                  16.  When you access your own computer through a loopback (when testing HTML documents for example), _________________________ is the name used for the computer.

                  17.  To specify an output file name to the C compiler (other than the default name, a.out), you would use the ____________________option.

                  18.  The word ____________________ in a function definition indicates that the function does not return a value.

                  19.  The scope of a(n) ____________________ variable in a C program is the entire program.

Matching

Identify the correct word with its corresponding definition.

____          20.  Tells the compiler that a specific function will be defined later in the program.

____          21.  A C function that opens a file.

____          22.  A C function that reads a single character from a file.

____          23.  A C looping statement that is used when you know the number of iterations.

____          24.  A C function used to input values of a variety of data types.

Short Answer

                  25.  What is the purpose of a linker?

                  26.  What is the purpose of the C library?

                  27.  Write a perl program to prompt the user for a file name, open the file and print each line aftre changing all letters to lower case.

                  28.  Write a perl program to read lines from a command line paremeter which is the name of a comma separated (commas separate fields) file and display the uniq values in the first field along with the number of times the values occur each on a line separated by a tab.

                  29.  Write an awk program to solve problem 28.