The concept of segmentation in os is similar to paging which is used for memory management. Segmentation divides the user program and the data associated with the program into the number of segments. Well, there is a difference between paging and segmentation in paging each page has an equivalent fixed size whereas segments are of variable size. The segmentation maps to the … [Read more...] about Segmentation in OS
Semaphore in Operating System
Semaphore in OS is an integer value that indicates whether the resource required by the process is available or not. The value of a semaphore is modified by wait() or signal() operation where the wait() operation decrements the value of semaphore and the signal() operation increments the value of the semaphore. The wait() operation is performed when the process wants to … [Read more...] about Semaphore in Operating System
Thread Libraries in OS
Thread Libraries has a collection of functions that useful in creating and controlling threads. Programmers can access these thread libraries using an application programming interface (API). Thread libraries can be the user level library or kernel level library. If the thread library is implemented at the userspace then code and data of the thread library would reside in … [Read more...] about Thread Libraries in OS
Principles of Cloud Computing
Studying principles of cloud computing would help you in the adoption and use of cloud computing. These principles unfold the opportunities for cloud customers to move their computing to the cloud and for a cloud vendor to deploy a successful cloud environment. National Institute of Standards and Technology (NIST) stated that cloud computing offers worldwide, and on-demand … [Read more...] about Principles of Cloud Computing
Security Challenges in Cloud Computing
The fundamental security challenges in cloud computing are to overcome security threats in order to fully utilize these new computing standards. Though cloud computing is a powerful and effective technology it has some security-related challenges. Exposing your sensitive and confidential data on the cloud can put your data at a risk. Though cloud services ensure the security … [Read more...] about Security Challenges in Cloud Computing