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112 Cards in this Set
- Front
- Back
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The program development cycle begins with creating specifications for a program.
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True
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After creating a flowchart, the next step in designing a program is to write the program code.
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False
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Pseudocode is a design tool only, and is never processed by the computer.
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True
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In UNIX/Linux, all shells support the same commands and programming statements.
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False
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A .bash_logout file in each Bash user's home directory executes commands when the user logs out.
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True
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The second step in the program development cycle is _____________.
a. creating program specifications b. coding the program c. debugging d. the design process |
d. the design process
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A ____________ is a logical diagram that uses a set of standard symbols to visually explain the sequence of events from the start of a process to its end point.
a. pseudocode b. flowchart c. block chart d. map |
b. flowchart
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Each step in the program is represented by a(n) __________ in the flowchart.
a. arrow b. symbol c. block d. label |
b. symbol
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In a flowchart, a(n) ________ is used to represent a process.
a. rectangle b. diamond c. circle d. arrow |
a. rectangle
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In a flowchart, a(n) ___________ is used to indicate process flow.
a. diamond b. arrow c. circle d. rectangle |
b. arrow
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In a flowchart, a(n) ________ is an on-page connector to continue process flow.
a. diamond b. arrow c. rectangle d. circle |
d. circle
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In a flowchart, a(n) ______________ is used to represent a decision.
a. circle b. arrow c. rectangle d. diamond |
d. diamond
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When you create a script, you should include the command that sets the particular shell to use on __________.
a. your login script b. the configuration line c. the last line of the script d. the first line of the script |
d. the first line of the script
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The line in the script for setting the Bash sell is: _________.
a. !#/bin/bash b. !/bin/bash c. #/bin/bash d. #!/bin/bash |
d. #!/bin/bash
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For your own account, the shell that is set up by default is established by the system administrator in the _______ file.
a. /etc/shadow b. /etc/default c. /etc/passwd d. /etc/shell |
c. /etc/passwd
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Each record in the /etc/passwd file is simply a record with variable-length fields separated by ________.
a. dahses (-) b. commas (,) c. semicolons (;) d. colons (:) |
d. colons (:)
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__________ is a multifunction tool that enables you to manage openSUSE from one location.
a. User Manager b. MC c. YaST d. Control Panel |
c. YaST
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The .bashrc file is a hidden file contained in _________ directory.
a. the /home b. your home c. the /usr d. the root |
b. your home
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To view a list of the files in a directory, including the hidden files, you should enter ________.
a. ls -l b. ls -r c. la -a d. ls -h |
c. ls -a
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The _______ file is run each time you log in or give command to set Bash as your current shell, but not when you run a subshell.
a. .bash_login b. .bash_profile c. .bash d. .bashrc |
b. .bash_profile
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The ________ file typically contains settings, such as environment variable settings, aliases, and other settings that you always want in effect when you are in the Bash shell.
a. .bash_profile b. .bash c. .bashrc d. .bash_login |
a. .bash_profile
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The __________ file runs when you log in using the Bash shell as the default, and each time you start a Bash shell within a Bash shell.
a. .bash b. .bash_profile c. .bashrc d. .bash_login |
c. .bashrc
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The __________ operator of the test command, combines two expressions and tests a logical OR relationship between them.
a. -O b. || c. -o d. | |
c. -o
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To format record output you can use the translate utility, ________.
a. tr b. trns c. trans d. translate |
a. tr
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A simple way to delete a record using _____ is with the -d (delete) option.
a. tr b. test c. sed d. awk |
c. sed
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A function name differs from a variable name because a function name is followed by a set of ________.
a. parentheses b. curly brackets c. square brackets d. angle brackets |
a. parentheses
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Most computers store text in EBCDIC codes.
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False
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One of the most effective utilities for auditing system performance is the top command.
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True
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The top utility continues to produce output until you press x to terminate the execution of the program.
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False
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Unlike top, the free utility runs and then automatically exits.
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True
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When you use restore, by default it copies back to your current working directory.
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True
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An IP address uses a dotted decimal notation that consists of 16-bit binary numbers (octets) seperated by periods used to identify a computer or network device and the network it is on.
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False
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The ______ utility manages a firewall and packet filtering.
a. netstat b. passwd c. iptables d. wall |
c. iptables
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The _____ utility maintains program source code.
a. configure b. gcc c. make d. patch |
c. make
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The ____ utility manages concurrent access to files in a hierarchy.
a. tree b. rcs c. cvs d. rlog |
c. cvs
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The ______ utility shcedules a command to run at a preset time.
a. call b. at c. crontab d. batch |
c. crontab
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Possessing a rich set of options that allow it to handle copies when other methods are inappropriate, the ____ command can handle conversions to and from legacy EBCDIC to ASCII.
a. convert b. dd c. tee d. df |
b. dd
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The df utility reports the number of ____-byte blocks that are allocated, used, and available; the percentage used; and the mount point - for mounted file systems.
a. 4096 b. 2048 c. 1024 d. 512 |
c. 1024
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When you use the du utility, file usage is expressed in the number of ____-byte blocks (default) or by the number of bytes (the -b option).
a. 4096 b. 1024 c. 2048 d. 512 |
d. 512
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_____ is the default file name for the output of program compilation procedures.
a. a.out b. out.a c. a.obj d. obj.a |
a. a.out
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The ____ command displays a listing of the most CPU-intensive tasks, such as the processor state, in real time (the display is updated every five seconds by default).
a. netstat b. ds c. top d. stat |
c. top
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The ____ command displays the amount of free and used memory in the system.
a. mem b. memstat c. stat d. free |
d. free
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To run a program in the background, append the ____ character to the end of the command used to start the program.
a. @ b. & c. $ d. * |
b. &
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The ___ option of the ispell utility is used to ignore concatenated words.
a. -c b. -C c. -I d. -i |
b. -C
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You can use the ____ utility to compare the contents of two files, and if there is a difference, the command reports the location at which the files first start to differ.
a. diff b. cmp c. difference d. compare |
b. cmp
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Dump level ___ is used to back up all files.
a. 9 b. 1 c. 10 d. 0 |
d. 0
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The ___ utility offers a simple way to test connections.
a. ipconfig b. ping c. netstat d. test |
b. ping
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The ____ option of the ping command displays only a summary of the results.
a. -s b. -q c. -c d. -r |
b. -q
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One use of ____ is to get a general idea of how efficiently your network is designed.
a. traceroute b. ipconfig c. netstat d. ping |
a. traceroute
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The ____ utility gathers statistics and information about IP communications on a computer.
a. netstat b. ipconfig c. traceroute d. ping |
a. netstat
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A(n) _____ enables services and software on one computer to use services and software on a different computer.
a. Smaba b. RPC c. NFS d. SMB |
b. RPC
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To start a service, you can use the ___ command from the root account.
a. service b. start c. exec d. stat |
a. service
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UNIX/Linux computers can access shared Windows system drives through the use of ____.
a. NFS b. Samba c. RPC d. IP |
b. Samba
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Samba is a utility that uses the ____ protocol, which is also used by Windows systems for sharing folders and printers.
a. IP b. SMB c. RPC d. NFS |
b. SMB
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The .pe extension is typically used to indicate that the file is a Perl script.
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False
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The value of a variable can change while a program runs.
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True
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In Perl, double-quoted strings are not subject to interpolation.
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False
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The Awk program does not require the programmer to explicitly set up looping structures as does Perl.
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True
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Awk is popular as a CGI tool for Web-based applications.
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False
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Perl is a(n) ____ language, which means that statements are read and immediately executed.
a. compiled b. fourth generation c. interpreted d. object-oriented |
c. interpreted
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All complete statements in Perl end with a(n) _____.
a. commac b. colon c. semicolon d. asterick |
c. semicolon
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A(n) ____ is a simple variable that holds a number or a string.
a. constant b. label c. identifier d. scalar |
d. scalar
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Scalar variable names begin with a(n) _____.
a. dollar sign ($) b. asterick (*) c. pound sign (#) d. exclamtation sign (!) |
a. dollar sign ($)
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______ are sequences of any types of characters (including numbers that are treated as characters rather than digits).
a. Constants b. Variables c. Scalars d. Strings |
d. strings
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The character sequence ____ forces the next character to uppercase.
a. \Q b. \u c. \U d. \" |
b. \u
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The character sequence ____ quotes all following nonalphanumeric characters until \E is encountered.
a. \U b. \* c. \Q d. \u |
c. \Q
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______ are variables that store an ordered list of scalar values that are accessed with numberic sunscripts, starting at zero.
a. Lists b. Strings c. Hashes d. Arrays |
d. Arrays
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When processing the individual elements of an array, use the ____ character.
a. $ b. * c. # d. @ |
a. $
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A(n) _____ is a variable that represents a set of key/value pairs.
a. hash b. string c. array d. tuple |
a. hash
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To refer to a single element of a hash, you use the $ character before the variable name, followed by the key associated with the value in ______.
a. parentheses b. angle brackets c. square brackets d. curly brackets |
c. curly brackets
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The following example shows a(n) ______ variable:
%animals = ('Tigers', 10, 'Lions', 20, 'Bears', 30); a. array b. string c. scalar d. hash |
d. hash
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If the ____ option is not included, the Awk program uses the first command-line argument as its program.
a. -i b. -I c. -F d. -f |
d. -f
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The convention is to use all uppercase letters for _____.
a. variables b. strings c. filehandles d. constants |
c. filehandles
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In Perl, print; is equivalent to _____.
a. print "$_"; b. print "_"; c. print "_$"; d. print "$"; |
a. print "$_";
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In Perl, the logical OR operator is _____.
a. <> b. <=> c. || d. | |
c. ||
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After you create a web page, you can publish the page on a web _____.
a. client b. database c. program d. server |
d. server
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The ____ feature allows your UNIX or Linux system to access its own internal netowrk configuration instead of an external netowrk.
a. ipconfig b. loopback c. spaceship d. netstat |
b. loopback
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The IP address _____ is the standard designation for loopback communication.
a. 127.0.0.1 b. 255.255.255.255 c. 192.168.0.1 d. 10.0.0.0 |
a. 127.0.0.1
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The name of the computer at the loopback address is _______.
a. root b. default c. host d. localhost |
d. localhost
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In HTML, all special codes contained inside angled brackets <> are _____.
a. tags b. constants c. variables d. commands |
a. tags
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The C language was partly developed to resolve the more lengthy requirements of assembly language.
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True
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Dennis Ritchie and Brian Kernigham rewrote most of UNIX using C++ in the early 1960s.
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False
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C can be described as a language that uses relatively short, isolated functions to break down large, complex tasks into small and easily resolved subtasks.
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True
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A variable's data type determines the upper and lower limits of its range of values.
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True
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The word "null" is used to indicate that a function returns no data.
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False
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fgetch() reads a single character from the file and points to it.
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False
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Unlike many other library input functions, readf() can be used to input values of a variety of data types.
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False
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C++ uses // to denote a comment line.
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True
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________ is the language in which UNIX was developed and refined.
a. Perl b. Awk c. C++ d. C |
d. C
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The original UNIX was written in _________.
a. Assembly language b. C b. C++ d. Awk |
a. Assembly language
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_________ is a low-level language that provides maximum access to all the computer's devices, both internal and external.
a. Assembly language b. C c. C++ d. Awk |
a. Assembly language
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The source code of a C program file is stored in a file with the _______ extension.
a. .gc b. .src c. .c d. .C |
c. .c
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A compiler is a program that translates the source code into _______ code, which consists of binary instructions.
a. compiled b. binary c. object d. binary |
c. object
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The output of a linker is a(n) ________ file.
a. binary b. executable c. object d. source code |
b. executable
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________ have special meanings, so you cannot use them as names for variables or functions.
a. Keywords b. Labels c. Constants d. Tags |
a. Keywords
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The ______ data type occupies a single byte.
a. int b. char c. double d. float |
b. char
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You can use three modifiers with int data types: short, long, and __________.
a. scalar b. double c. array d. unsigned |
d. unsigned
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When you represent character data in a program as a character constant, you enclose the character in _______.
a. double quotation marks b. curly braces c. angle braces d. single quotation marks |
d. single quotation marks
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A(n) ________ is a group of characters, such as a name.
a. scalar b. array c. string d. hash |
c. string
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When you use string constants in your C program, they must be enclosed in _________.
a. curly braces b. angle braces c. double quotation marks d. single quotation marks |
c. double quotation marks
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__________ is an example of how you can declare a string in C.
a. sting name; b. char name[20]; c. String name; d. string name[20]; |
b. char name[20];
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The ______ of a variable is the part of the program in which the variable is defined and, therefore, accessible.
a. scope b. reach c. aim d. length |
a. scope
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Variables that are declared inside a function are called ________ variables.
a. global b. automatic c. scalar d. independent |
b. automatic
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Automatic variables are _______ to the function in which they are declared.
a. unique b. global c. assigned d. local |
d. local
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C's increment operator is:
a. ++ b. += c. =+ d. + |
a. ++
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The decrement operator is a(n) _______ operator.
a. unary b. binary c. arbitrary d. primary |
a. unary
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The _______ format specifier is used to denote a signed decimal integer.
a. %c b. %f c. %d d. %s |
c. %d
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The _______ format specifier is used to denote a floating point number in decimal notation.
a. %c b. %f c. %d d. %s |
b. %f
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C provides three looping mechanisms: the for loop, the while loop, and the ________ loop.
a. while-do b. repeat-until c. do-while d. switch |
c. do-while
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_________ are continuous streams of data.
a. Files b. Strings c. Arrays d. Pointers |
a. Files
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The ________ utility tracks what needs to be recompiled by using the time stamp field for each source file.
a. configure b. gcc c. compile d. make |
d. make
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The _______ scanf() format specifier is used to indicate that scanf() should interpret the input value as a pointer.
a. %p b. %r c. %R d. %P |
d. %P
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