(Please all solve the question) Step 1 Access Matrix is a security model of insurance state in PC framework. It is addressed as a grid. Access grid is utilized to characterize the freedoms of each...

(Please all solve the question)

Extracted text: In the context of interprocess communications (IPC) in Unix/Linux, which of the following are true about sockets and message queues? Select one or more: O a. Two-way communication between a server process and a client process cannot be achieved with a single socket connection between that server and that client. O b. Each message in a message queue can be associated with a type, and a process that reads data from a message queue can specify which type of messages it would like to read. Oc. We do not normally need worry about managing concurrency when using sockets and message queues as this will be managed by the operating system kernel. O d. To successfully establish a socket connection between a server process and a client process, the server needs to know the address of the socket and connect to it, whereas the client process needs to be listening on that particular socket and accept the incoming connection request. O e. When using message queues to communicate between processes, the messages that are sent between processes cannot be of different lengths.


Extracted text: In the context of interprocess communications (IPC) in Unix/Linux, which of the following are true about signals, shared memory and pipes? Select one or more: O a. Virtual memory enables the allocation of shared memory for IPC. O b. If Process X needs to send the string "Hello World" to Process Y, Process X may send a signal to achieve this. Concurrent two-way communication between two processes cannot be achieved with the use of a single pipe. O d. A process cannot have a handler function set up to handle the SIGINT signal, as the process may not ignore this signal. e. Shared memory is fast because it is buffered by the operating system kernel. Of. Unnamed pipes can only be used to share data between related processes (e.g. parent process and its child process), whereas named pipes can be used to share data between processes that are unrelated.