topic is operating systems

QUESTION 11 Select the true statement(s). CA. The first computer with a mouse was designed by Apple. OC. Most mobile devices run some version of Windows. GD. Most desktops run Windows. QUESTION 12 Modern operating systems, due to size and complexity, suffer from CA. cost and time overruns. CB. latent bugs that show up in the field. CC. unforseen problems after release. OD. Security flaws. QUESTION 19 In a multi-threaded process CA. a single process contains multiple threads of execution. OB. threads run concurrently from the user's perspective. oc. each thread maintains a program counter (PC) and stack pointer (SP). CD. a thread shares the process control block (PCB) of its enclosing process. QUESTION 14 Linux (written by Linus Torvalds) CA. is a free os available under the Free Software Foundation. OB. runs only on Intel processors. oc. was originally developed to run on an Intel processor. D. was developed at Bell Labs. QUESTION 15 A monolithie kernel DA. is typically loaded into a single address space. B. contains a few essential functions - the rest are loaded as needed. oc. in theoretically more difficult to maintain than a microkernel. OD. is theoretically less secure than a microkernel. QUESTION 10 A technique in which one process is divided into multiple threads of execution that run concurrently is called DA. Multithreading OB. Multiprogramming oc. Symmetric multiprocessing (SMP) CD. Multitasking QUESTION 17 The microkernel architecture CA. Loada 'servers into user space to handle additional needs. OB. is more flexible than a monolithic kernel. Oc. lends itself to a distributed environment. OD. is more efficient. QUESTION 18 Access control is part of Information protection and security. Access control attempts to guarantee that CA. security mechanisms perform according to specification. B. the flow of data within the system is valid. oc. user and process access to the system is controlled. CD. None of the above QUESTION 10 Apple OS X is CA. derived from BSD Unix. B. open source. QUESTION 20 A multithreaded program DA. requires a machine with multiple processors. OB. contains multiple threads of execution. cc. is another name for multi-tasking. D. may have multiple schedulable threads of execution