Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain Concurrent Sharing
Here a number of programs that may share a file simultaneously. While this is the case, it is necessary to prevent mutual interference among them. There are three types of concurrent sharing:
1. Immutable files: If a file is shared in immutable mode, none of the sharing programs can alter it. This mode has the benefit that sharing programs are independent of one another.
2. Single image immutable files: Here the modifications made by one program are instantaneously visible to other programs. The UNIX file system employs this file-sharing mode.
3. Multiple image mutable files: Here several programs can concurrently update the shared file. Each updating program makes a new version of the file that is different from the version made by concurrent programs.
This sharing mode can just only be used in applications in which concurrent updates and the existence of several versions are meaningful.
Why do we need DMA? DMA is used to transfer the block of data directly among an external device and the main memory without the continuous intervention by the processor.
Which device changes from serial data to parallel data ? Ans. Demultiplexer is the device that changes from serial data to parallel data. Demultiplexer takes data in from on
Two computers using TDM take up turns to send 100-bytes packet over a shared channel that operates at 64000 bits per second. The hardware takes 100 microseconds after one computer
Disadvantage and Advantage of mutual-exclusion implementation with semaphores. Disadvantage: Mutual-exclusion solutions specified by semaphores require busy waiting. Tha
Q. Explain about distributed systems? A Distributed System in that Data, Process and Interface component of information System are distributed to many locations in a computer n
Processing elements (PEs) : Every processing element consists of ALU, local memory and its registers for storage of distributed data. This PEs has been interconnected via an inte
Web pages or materials which are in the form of hypermedia documents accessed through Internet can be located anywhere in world. No matter from where they originated, most Web d
In a word,you can't. It would certainly be helpful to be able to color-code your worksheet tabs. For some reason, Microsoft hasn't executed this feature, which has been available i
Highly Encoded micro-instructions Encoded bits required in micro-instructions are small. It provided an aggregated view that is a higher view of CPU as just an encoded
What is the maximum number of fragments that can result from a single IP Datagram? Explain. To fragment a datagram for transmission across a network, a router utilizes the netw
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd