Deck 4: Memory Management, Content Delivery, and Thread Models

Question 1

Each entry in a segment table has a :

A)segment base
B)segment peak
C)segment limit
D)segment value

Answer 1

segment limit

Question 2

The segment base contains the :

A)starting logical address of the process
B)starting physical address of the segment in memory
C)segment length
D)none of these

Answer 2

starting physical address of the segment in memory

Question 3

The segment limit contains the :

A)starting logical address of the process
B)starting physical address of the segment in memory
C)segment length
D)none of these

Answer 3

segment length

Question 4

The offset 'd' of the logical address must be :

A)greater than segment limit
B)between 0 and segment limit
C)between 0 and the segment number
D)greater than the segment number

Question 5

If the offset is legal :

A)it is used as a physical memory address itself
B)it is subtracted from the segment base to produce the physical memory address
C)it is added to the segment base to produce the physical memory address
D)none of these

Question 6

When the entries in the segment tables of two different processes point to the same physical location :

A)the segments are invalid
B)the processes get blocked
C)segments are shared
D)all of these

Question 7

If there are 32 segments, each of size 1Kb, then the logical address should have :

A)13 bits
B)14 bits
C)15 bits
D)16 bits

Question 8

It uses a direct mapping scheme for cache management. How many different main memory blocks can map onto a given physical cache block ?

A)2048
B)256
C)64
D)8

Question 9

A multilevel page table is preferred in comparison to a single level page table for translating virtual address to physical address because :

A)it reduces the memory access time to read or write a memory location
B)it helps to reduce the size of page table needed to implement the virtual address space of a process
C)it is required by the translation look aside buffer
D)it helps to reduce the number of page faults in page replacement algorithms

Question 10

The three general methods for delivering content from a server to a client across a network are :

A)unicasting
B)duplex-casting
C)broadcasting
D)multicasting

Question 11

Unicasting delivers the content to :

A)a single client
B)all clients, regardless whether they want the content or not
C)a group of receivers who indicate they wish to receive the content
D)none of these

Question 12

Broadcasting delivers the content to :

A)a single client
B)all clients, regardless whether they want the content or not
C)a group of receivers who indicate they wish to receive the content
D)none of these

Question 13

Multicasting delivers the content to :

A)a single client
B)all clients, regardless whether they want the content or not
C)a group of receivers who indicate they wish to receive the content
D)none of these

Question 14

RTSP stands for :

A)real time streaming policy
B)real time streaming protocol
C)real time systems protocol
D)read time streaming policy

Question 15

In the SETUP state :

A)the server is setup
B)the client is setup
C)the server allocates resources for the client session
D)the client sends requests to the server

Question 16

In the TEARDOWN state :

A)the server breaks down the connection and releases the resources allocated for the session
B)the client breaks down the connection and releases the resources allocated for the session
C)the system crashes
D)none of these

Question 17

The problem with unicast delivery is that the :

A)memory allocation is difficult
B)server must establish a seperate unicast session for each client
C)the routers must support unicasting
D)the clients must be close to the server

Question 18

To let a client have random access to a media stream :

A)the protocol used must not be stateless
B)the server must support download
C)the stream should give access rights to the client
D)all of these

Question 19

The model in which one kernel thread is mapped to many user-level threads is called :

A)many to one model
B)one to many model
C)many to many model
D)one to one model

Question 20

The model in which one user-level thread is mapped to many kernel level threads is called :

A)many to one model
B)one to many model
C)many to many model
D)one to one model

Question 21

In the Many to One model, if a thread makes a blocking system call :

A)the entire process will be blocked
B)a part of the process will stay blocked, with the rest running
C)the entire process will run
D)none of these