A33a

1. …………….. are used in denial of service attacks, typically against targeted web sites. A) Worm B) Zombie C) Virus D) Trojan horse 2. Select the correct order for the different phases of virus execution. i) Propagation phase                      ii) Dormant phase iii) Execution phase                         iv) Triggering phase A) i, ii, iii, and iv B) i, iii, ii and iv C) ii, i, iv an iii D) ii, iii, iv and i 3. A ………………… attaches itself to executable files and replicates, when the infected program is executed, by finding other executable files to infect. A) Stealth virus B) Polymorphic Virus C) Parasitic Virus D) Macro Virus 4. …………………….. is a form of virus explicitly designed to hide itself from detection by antivirus software. A) Stealth virus B) Polymorphic Vir...

1. In computer security, ……………………. means that computer system assets can be modified only by authorized parities. A) Confidentiality B) Integrity C) Availability D) Authenticity 2. In computer security, …………………….. means that the information in a computer system only be accessible for reading by authorized parities. A) Confidentiality B) Integrity C) Availability D) Authenticity 3. The type of threats on the security of a computer system or network are …………………….. i) Interruption                   ii) Interception                  iii) Modification iv) Creation                         v) Fabrication A) i, ii, iii and iv only B) ii, iii, iv and v only C) i, ii, iii and v only D) All i, ii, iii, iv and v 4. Whi...

1. …………. Involves treating main memory as a resource to be allocated to and shared among a number of active processes. A) Partition management B) Memory management C) Disk management D) All of the above 2. A process that execute only in main memory is referred to as ……………… and that allocated in disk is referred to a ……………. A) virtual memory, true memory B) virtual memory, real memory C) real memory, virtual memory D) imaginary memory, real memory 3. In process scheduling, …………………… determines when new processes are admitted to the system. A) long term scheduling B) medium term scheduling C) short term scheduling D) none of the above 4. In process scheduling, ………………… determines which ready process will be executed next by processor. A) long term scheduling B) medium term scheduling C) short term scheduling D) none of the above 5. The sum of the seek time, and the rotational delay is called the ……………….. A) reached time B) access time C) arrived time D) common time 6. The …………….. policy se...

1. The unit of dispatching is usually referred to as a ………….. A) Thread B) Lightweight process C) Process D) Both A and B 2. ……………….. is a example of an operating system that support single user process and single thread. A) UNIX B) MS-DOS C) OS/2 D) Windows 2000 3. State true or false. i) Unix, support multiple user process but only support one thread per process. ii) A java run time environment is an example of a system of one process with multiple threads. A) True, False B) True, True C) False, True D) False, False 4. …………… are very effective because a mode switch is not required to switch from one thread to another. A) Kernel-level threads B) User-level threads C) Alterable threads D) Application level threads 5. …………… is a condition in which there is a set of concurrent processes, only one of which is able to access a given resource or perform a given function at any time. A) Mutual Exclusion B) Busy Waiting C) Deadlock D) Starvation 6. …………………. Techniques can be used to resolve...

1. .............. refers to a situation in which a process is ready to execute but is continuously denied access to a processor in deference to other processes. A) Synchronization B) Mutual Exclusion C) Dead lock D) Starvation 2. Which of the following is not the approach to dealing with deadlock? A) Prevention B) Avoidance C) Detection D) Deletion 3. Which of the following are the states of a five state process model? i) Running            ii) Ready               iii) New                 iv) Exit                   v) Destroy A) i, ii, iii and v only B) i, ii, iv and v only C) i, ii, iii, and iv only D) All i, ii, iii, iv and v 4. State which statement is true for Suspended process? i) The process is not immedia...

1. All java classes are derived from A) java.lang.Class B) java.util.Name C) java.lang.Object D) java.awt.Window 2. The jdb is used to A) Create a jar archive B) Debug a java program C) Create C header file D) Generate java documentation 3. What would happen if "String[]args" is not included as argument in the main method. A) No error B) Compilation error C) Program won't run D) Program exit 4. For execution of DELETE SQL query in JDBC, ............. method must be used. A) executeQuery() B) executeDeleteQuery() C) executeUpdate() D) executeDelete() 5. Which method will a web browser call on a new applet? A) main method B) destroy method C) execute method D) init method 6. Which of the following is not mandatory in variable declaration? A) a semicolon B) an identifier C) an assignment D) a data type 7. When a program class implements an interface, it must provide behavior for A) two methods defined in that interface B) any methods in a class C) only certain methods in tha...

1. The JDBC-ODBC bridge allows ……….. to be used as ………..  A) JDBC drivers, ODBC drivers B) Drivers, Application C) ODBC drivers, JDBC drivers D) Application, drivers 2. Which of the following is true about Java. A) Java does not support overloading. B) Java has replaced the destructor function of C++ C) There are no header files in Java. D) All of the above. 3. ……………. are not machine instructions and therefore, Java interpreter generates machine code that can be directly executed by the machine that is running the Java program. A) Compiled Instructions B) Compiled code C) byte code D) Java mid code 4. The command javac A) Converts a java program into binary code B) Converts a java program into bytecode C) Converts a java program into machine language D) None of the above. 5. Which of the following is not the java primitive type A) Byte B) Float C) Character D) Long double 6. Command to execute compiled java program is A) java B) javac C) run D) javaw 7. Java Servlet i) is key compo...