Skip to main content

PROBLEM SOLVING AND PYTHON PROGRAMMING QUIZ

1) What is the first step in problem-solving? A) Writing code B) Debugging C) Understanding the problem D) Optimizing the solution Answer: C 2) Which of these is not a step in the problem-solving process? A) Algorithm development B) Problem analysis C) Random guessing D) Testing and debugging Answer: C 3) What is an algorithm? A) A high-level programming language B) A step-by-step procedure to solve a problem C) A flowchart D) A data structure Answer: B 4) Which of these is the simplest data structure for representing a sequence of elements? A) Dictionary B) List C) Set D) Tuple Answer: B 5) What does a flowchart represent? A) Errors in a program B) A graphical representation of an algorithm C) The final solution to a problem D) A set of Python modules Answer: B 6) What is pseudocode? A) Code written in Python B) Fake code written for fun C) An informal high-level description of an algorithm D) A tool for testing code Answer: C 7) Which of the following tools is NOT commonly used in pr...

DEADLOCK

DEAD LOCKS
System Model
● For the purposes of deadlock discussion, a system can be modeled as a collection of limited resources, which can be splitted into different classes, to be allocated to a number of processes, each having different needs.
● Resource classes may adds memory, printers, CPUs, open files, tape drives, CD-ROMS, etc.
● By definition, all the resources within a classification are equivalent, and a request of this category can be equally satisfied by any one of the resources in that category. If this is not the instance ( i.e. if there is some difference between the resources within a class ), then that class needs to be 
further divided into separate categories. For example, "printers" may require to be separated into "laser printers" and "color inkjet printers".
● Some classification may have a single resource.
● In normal performance a process must request a resource before using it, and release it when it is complete, in the following sequence:
1. Request - If the request cannot be immediately allowed, then the process must wait until the resource(s) it needs become available. Example: system calls open( ), malloc( ), new( ), and request( ).
2. Use - The process make use of the resource.
Example: prints to the printer or reads from the file.
3. Release - The process relinquishes the resource. so that it becomes obtainable for other processes. 
Example:close( ) free( ) delete( ) and release( ).
● For all kernel-managed resources, the kernel keeps trace of what resources are free and which are allocated, to which process they are allocated, and a queue of processes waiting for this resource 
to become available. Application-managed resources can be controlled utilize mutexes or wait( ) and signal( ) calls, ( i.e. binary or counting semaphores. )
● A group of processes is deadlocked when every process in the group is waiting for a resource that is presently assignedto another process in the group (and which can only be freed when that other 
waiting process makes progress. )



Labels:

Popular posts from this blog

Abbreviations

No :1 Q. ECOSOC (UN) Ans. Economic and Social Commission No: 2 Q. ECM Ans. European Comman Market No : 3 Q. ECLA (UN) Ans. Economic Commission for Latin America No: 4 Q. ECE (UN) Ans. Economic Commission of Europe No: 5 Q. ECAFE (UN)  Ans. Economic Commission for Asia and the Far East No: 6 Q. CITU Ans. Centre of Indian Trade Union No: 7 Q. CIA Ans. Central Intelligence Agency No: 8 Q. CENTO Ans. Central Treaty Organization No: 9 Q. CBI Ans. Central Bureau of Investigation No: 10 Q. ASEAN Ans. Association of South - East Asian Nations No: 11 Q. AITUC Ans. All India Trade Union Congress No: 12 Q. AICC Ans. All India Congress Committee No: 13 Q. ADB Ans. Asian Development Bank No: 14 Q. EDC Ans. European Defence Community No: 15 Q. EEC Ans. European Economic Community No: 16 Q. FAO Ans. Food and Agriculture Organization No: 17 Q. FBI Ans. Federal Bureau of Investigation No: 18 Q. GATT Ans. General Agreement on Tariff and Trade No: 19 Q. GNLF Ans. Gorkha National Liberation Front No: ...
Read more

Operations on data structures

OPERATIONS ON DATA STRUCTURES This section discusses the different operations that can be execute on the different data structures before mentioned. Traversing It means to process each data item exactly once so that it can be processed. For example, to print the names of all the employees in a office. Searching It is used to detect the location of one or more data items that satisfy the given constraint. Such a data item may or may not be present in the given group of data items. For example, to find the names of all the students who secured 100 marks in mathematics. Inserting It is used to add new data items to the given list of data items. For example, to add the details of a new student who has lately joined the course. Deleting It means to delete a particular data item from the given collection of data items. For example, to delete the name of a employee who has left the office. Sorting Data items can be ordered in some order like ascending order or descending order depending ...
Read more

The Rise of Green Buildings: A Sustainable Future

In an era where climate change and environmental sustainability dominate global conversations, the concept of green buildings has emerged as a pivotal solution. These structures, designed with both ecological and human health in mind, represent a shift towards more sustainable urban development. But what exactly are green buildings, and why are they so important? What Are Green Buildings? Green buildings, also known as sustainable buildings, are structures that are environmentally responsible and resource-efficient throughout their life cycle—from planning and design to construction, operation, maintenance, renovation, and demolition. This holistic approach seeks to minimize the negative impact of buildings on the environment and human health by efficiently using energy, water, and other resources. Key Features of Green Buildings Energy Efficiency: Green buildings often incorporate advanced systems and technologies to reduce energy consumption. This can include high-efficiency HVAC sys...
Read more