ITS-235 Quiz 10

True

A DO/S must keep a global accounting of each network device and its availability, maintain each device's status record and control block, and distribute this information to all sites. True / False

distributed

A(n) _____________ operating system accesses resources using global mechanisms rather than local mechanisms.

distributed

In a(n) _____________ operating system requests are passed directly from node to node via the operating system.

False (NOS was developed first.)

The distributed operating system (DO/S) was developed before the network operating system (NOS). True / False

True

Under a DO/S, resources are allocated based on negotiation and compromise among equally important peer sites in the distributed system. True / False

Networks

___________________ were created initially to share expensive hardware resources such as high-speed printers and mainframes.

distributed

A(n) _____________ operating system provide a unified environment designed to optimize operations for the network as a whole and not just for local sites.

True

Data redundancy can make files much faster and easier to read. True / False

False (Each kernel is operated by the DO/S, which, in turn, is directed by the application software running on the host computer.)

Each kernel is operated by the application software which, in turn, is directed by the kernel running on the host computer. True / False

False (Read-only)

Execute-only access allows users to read the page; however, they are not allowed to modify it. True / False

c. paging

For each node in a DO/S, the Memory Manager uses a kernel with a ____ algorithm to track the amount of memory that is available. a. turning b. stacking c. paging d. sharing

distributed

Groupware uses technologies such as ______________ processing that allows even greater access to centralized information and to allow users to work together to complete common tasks.

False (If a process requests access to a region in memory, the capability manager first determines whether the requesting process has been previously granted rights.)

If a process requests access to a region in memory, the process manager determines whether the requesting process has been previously granted rights. True / False

c. synchronous

In ____ communication schemes, the sender and receiver are linked and ready to send and receive. a. indirect b. asynchronous c. synchronous d. direct

d. kernel

In a DO/S, the ____ is responsible for process synchronization mechanisms and communication support. a. the responsibility is shared among sites b. central controller c. network manager d. kernel

True

In a distributed system, there is a high level of cooperation and sharing of actions and data maintained by the sites when determining which process should be loaded and where it should be run. True / False

d. resources are owned by local nodes

In a network operating system (NOS), ____. a. local operations at a node are managed by the NOS b. local resources are managed globally c. access control policies are globally managed d. resources are owned by local nodes

b. stand-alone system

In a network operating system (NOS), the network management functions come into play only when the system needs to use the network. At all other times, the operating system operates as if it's a(n) ____. a. process-based DO/S b. stand-alone system c. logically distributed system d. object-based DO/S

True

In a network, the Processor Manager provides the policies and mechanisms to create, delete, abort, name, rename, find, schedule, block, run, and synchronize processes. True / False

a. log on to the local network

In a typical NOS environment, a user who wants to run a local process at a remote site must first ____. a. log on to the local network b. send a request to the remote site to schedule the process on its system c. instruct the local system to migrate the process or data to the remote site d. log on to the NOS

d. Another device manager

In an object-based DO/S, if the local device manager cannot satisfy a user's request, the request is sent to ____. a. The heap b. A waiting queue c. A central computer d. Another device manager

kernel

In memory management, pages are protected using hardware or low-level memory software in each site's ______________.

kernel

In process management, the ______________ actually controls and operates the CPU and manages the queues used for states of execution.

True

Location transparency, the essence of cloud computing, is provided by mechanisms and directories that map logical data items to physical locations so that users don't need to be concerned with the physical locations of their files. True / False

False (Networks were created initially to share expensive hardware resources such as large mainframes, centralized high-speed printers, and sizable hard disks.)

Networks were created initially to share data. True / False

False (One advantage of an object-based DO/S is that several objects can be assembled to communicate and synchronize with each other to provide a distributed network of resources, with each object knowing the location of its distributed peers.)

One advantage of process-based DO/S is that the processes can be assembled to communicate and synchronize with each other to provide a distributed network of resources, with each process knowing the location of its distributed peers. True / False

kernel

The ___________ level, in an object-based distributed operating system, provides the basic mechanisms for building parts of the operating system by creating, managing, scheduling, synchronizing, and deleting objects in a dynamic fashion.

False (The arbitration rule is a policy that's used to resolve conflicts between jobs of equal priority.)

The arbitration rule of a system scheduling function is a policy that is used to resolve conflicts between jobs of different priorities. True / False

a. lack of global control

The biggest limitation of a network operating system (NOS) is ____ in terms of memory, process, device, and file management. a. lack of global control b. lack of security c. prohibitive cost d. lack of scalability

d. The network usage patterns

To control demands on memory in a DO/S, the Memory Manager handles requests from the Process Manager to allocate and deallocate space based on ____. a. The priority of the node generating the request b. The priority of each process c. A round robin scheduling algorithm d. The network usage patterns

True

To globally manage the network's entire suite of resources, a DO/S is typically constructed with a replicated kernel operating system. True / False

b. page fault

When an application tries to access a page that is not in memory, a ____ occurs and the Memory Manager automatically brings that page into memory. a. page allocation b. page fault c. demand page d. page request

network operating system (NOS)

When discussing networking systems, the _____________ developed first and evolved from the need to give users global access to resources and make the network almost completely transparent for users and local operating systems.