MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 116 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science Engineering (CSE) knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
State whether the following statements are True or False for the features of real time operating system.i) fast process or thread switchii) ability to respond to external interrupts quickly.iii) minimization of intervals during which interrupts are enabled.iv) preemptive scheduling based on priority |
| A. | i, ii and iii only |
| B. | ii, iii and iv only |
| C. | i, ii and iv only |
| D. | All i, ii, iii and iv |
| Answer» D. All i, ii, iii and iv | |
| 2. |
In which scheduling certain amount of CPU time is allocated to each process ? |
| A. | earliest deadline first scheduling |
| B. | roportional share scheduling |
| C. | equal share scheduling |
| D. | none of the mentioned |
| Answer» C. equal share scheduling | |
| 3. |
In on-line scheduling, scheduler make the schedule ……………………... that will be released in future. |
| A. | with the knowledge of the jobs |
| B. | without the knowledge of the jobs |
| C. | both |
| D. | None of these |
| Answer» C. both | |
| 4. |
LRT schedules all the job backward from …………………... of all the job in priority driven manner to the current time. |
| A. | Earliest deadline |
| B. | latest deadline |
| C. | latest releasetime |
| D. | None of these |
| Answer» C. latest releasetime | |
| 5. |
Effective deadline of job with successor is equal tothe minimum value among its deadlines and ………………………… |
| A. | only deadline of job |
| B. | Release time of all the successors |
| C. | deadlines of all the successors |
| D. | None of these |
| Answer» D. None of these | |
| 6. |
Effective release time of a job with predecessors is equal to the maximum value among, its…………and………….. |
| A. | deadline time and effective release time of all of the predecessors. |
| B. | release time and effective release time of all of the predecessors. |
| C. | both |
| D. | None of these |
| Answer» C. both | |
| 7. |
Effective deadline of job without the successor is equal to its given …………… |
| A. | release time |
| B. | Deadline |
| C. | both |
| D. | None of these |
| Answer» C. both | |
| 8. |
Effective release time of a job without the predecessors is equal to its given ……………. |
| A. | release time |
| B. | Deadline |
| C. | both |
| D. | None of these |
| Answer» B. Deadline | |
| 9. |
State whether the following statements are True or False for the features of real time operating system.i) fast process or thread switch ii) ability to respond to external interrupts quickly. iii) minimization of intervals during which interrupts are enabled. iv) preemptive scheduling based on priority |
| A. | i, ii and iii only |
| B. | ii, iii and iv only |
| C. | i, ii and iv only |
| D. | All i, ii, iii and iv |
| Answer» D. All i, ii, iii and iv | |
| 10. |
What is True for a task vis-à-vis a process? |
| A. | Tasks are complex compared to processes |
| B. | Tasks represent only a single sequence of instructions |
| C. | Processes can spawn threads but tasks cannot spawn tasks Tasks and processes are one and the same thing |
| D. | Tasks and processes are one and the same thing |
| Answer» C. Processes can spawn threads but tasks cannot spawn tasks Tasks and processes are one and the same thing | |
| 11. |
Calculate the idle time of the processor with 3 periodic tasks whose execution times are given as 1, 1, and 3, and their periods are 3, 4, and 10. Select one: 17% 12% 88% |
| A. | 0.17 |
| B. | 0.12 |
| C. | 0.88 |
| D. | 1 |
| Answer» C. 0.88 | |
| 12. |
Type of processor in which single task of a particular application is process is termed as Select one: |
| A. | a. real time processor |
| B. | b. dedicated processor |
| C. | c. applicant processor |
| D. | d. one task processor |
| Answer» C. c. applicant processor | |
| 13. |
Memory management units ____________ |
| A. | increase the cost of the system |
| B. | increase the power consumption of the system |
| C. | increase the time required to complete an operation |
| D. | all of the mentioned |
| Answer» E. | |
| 14. |
. The amount of memory in a real time system is generally ____________ |
| A. | less compared to PCs |
| B. | high compared to PCs |
| C. | same as in PCs |
| D. | they do not have any memory |
| Answer» B. high compared to PCs | |
| 15. |
If there are a total of T = 100 shares to be divided among three processes, A, B and C. A is assigned 50 shares, B is assigned 15 shares and C is assigned 20 shares.C will have ______ percent of the total processor time. |
| A. | 20 |
| B. | 15 |
| C. | 50 |
| D. | none of the mentioned |
| Answer» B. 15 | |
| 16. |
If there are a total of T = 100 shares to be divided among three processes, A, B and C. A is assigned 50 shares, B is assigned 15 shares and C is assigned 20 shares.A will have ______ percent of the total processor time. |
| A. | 20 |
| B. | 15 |
| C. | 50 |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 17. |
A process P1 has a period of 50 and a CPU burst of t1 = 25, P2 has a period of 80 and a CPU burst of 35., can the two processes be scheduled using the EDF algorithm without missing their respective deadlines? |
| A. | Yes |
| B. | No |
| C. | Maybe |
| D. | None of the mentioned |
| Answer» B. No | |
| 18. |
. If there are a total of T = 100 shares to be divided among three processes, A, B and C. A is assigned 50 shares, B is assigned 15 shares and C is assigned 20 shares.B will have ______ percent of the total processor time. |
| A. | 20 |
| B. | 15 |
| C. | 50 |
| D. | none of the mentioned |
| Answer» C. 50 | |
| 19. |
Antilock brake systems, flight management systems, pacemakers are examples of |
| A. | safety critical system |
| B. | hard real time system |
| C. | soft real time system |
| D. | safety critical system and hard real time system |
| Answer» E. | |
| 20. |
What is Event latency? |
| A. | the amount of time an event takes to occur from when the system started |
| B. | the amount of time from the event occurrence till the system stops |
| C. | the amount of time from event occurrence till the event crashes |
| D. | the amount of time that elapses from when an event occurs to when it is serviced. |
| Answer» E. | |
| 21. |
Time duration required for scheduling dispatcher to stop one process and start another is known as ____________ |
| A. | process latency |
| B. | dispatch latency |
| C. | execution latency |
| D. | interrupt latency |
| Answer» C. execution latency | |
| 22. |
Hard real time operating system has ______________ jitter than a soft real time operating system. |
| A. | less |
| B. | more |
| C. | equal |
| D. | none of the mentioned |
| Answer» B. more | |
| 23. |
Some of the properties of real time systems include ____________ |
| A. | single purpose |
| B. | inexpensively mass produced |
| C. | small size |
| D. | all of the mentioned |
| Answer» E. | |
| 24. |
Antilock brake systems, flight management systems, pacemakers are examples of ____________ |
| A. | safety critical system |
| B. | hard real time system |
| C. | soft real time system |
| D. | safety critical system and hard real time system |
| Answer» E. | |
| 25. |
Advantages of SPI are….. |
| A. | It\s faster than asynchronous serial. |
| B. | The receive hardware can be a simple shift register. |
| C. | It supports multiple slaves. |
| D. | All of Above |
| Answer» E. | |
| 26. |
The address system supported by ARM systems is/are ___________ |
| A. | Little Endian |
| B. | Big Endian |
| C. | X-Little Endian |
| D. | Both Little & Big Endian |
| Answer» E. | |
| 27. |
What is the maximum device handling capacity of serial standard protocol RS485 in terms of drivers and receivers on a single line? |
| A. | 8 |
| B. | 10 |
| C. | 16 |
| D. | 32 |
| Answer» E. | |
| 28. |
Which protocol standard of serial communication specify the bi-directional and half-duplex form of data transmission by allowing various numbers of drivers and receivers in bus configuration? |
| A. | RS232 |
| B. | RS2485 |
| C. | RS422 |
| D. | RS423 |
| Answer» C. RS422 | |
| 29. |
Many cables have “RS-232” connectors with some wires crossed or connected to each other because…. |
| A. | there are various RS-232 standards. |
| B. | asynchronous modem reverses the direction of transmitted and received data from the standard. |
| C. | accept commands from the terminals Via Rs-232 interface. |
| D. | many computers and peripherals use RS-232 serial interfaces, but not as DTE-to-DCE |
| Answer» E. | |
| 30. |
RS-232, RS-449, RS-530, V-24, and X-21 are examples of? |
| A. | standards for various types of transmission channels. |
| B. | standards for interfaces between terminals and modems. |
| C. | two methods of error detection and correction |
| D. | standards for end-to-end performance of data communication systems. |
| Answer» C. two methods of error detection and correction | |
| 31. |
What WLAN device provides communications management services to wireless workstations? |
| A. | Access Point |
| B. | Antenna |
| C. | Network Adaptor |
| D. | Repeater |
| Answer» B. Antenna | |
| 32. |
The device which starts data transfer is called __________ |
| A. | Master |
| B. | Transactor |
| C. | Distributor |
| D. | Initiator |
| Answer» E. | |
| 33. |
The acronym HDI stands for:The acronym HDI stands for: |
| A. | Half duplex interface |
| B. | Hard disk |
| C. | Hard disk interface |
| D. | Help desk interference |
| Answer» D. Help desk interference | |
| 34. |
Which method of multiple secondary communication in TDMA is acquired/adopted by bluetooth especially where data integrity becomes more crucial than avoiding latency? |
| A. | synchronous connection-oriented (sco) link |
| B. | asynchronous connectionless link (acl) |
| C. | both a & b |
| D. | none of the above |
| Answer» C. both a & b | |
| 35. |
The upper 128 bytes of an internal data memory from 80H through FFH usually represent ___________. |
| A. | general-purpose registers |
| B. | special function registers |
| C. | stack pointers |
| D. | program counters |
| Answer» C. stack pointers | |
| 36. |
Which potential mode of operation indicate the frequent sending of byte to the slave corresponding to the reception of an acknowledge signal when it becomes desirable for the master to write to the slave during data transmission in I2C bus? |
| A. | master in master-transmit mode & slave in slave-receive mode |
| B. | slave in slave-transmit mode & master in master-receive mode |
| C. | master in master-transmit mode as well as master-receive mode |
| D. | slave in slave-transmit mode as well as slave-receive mode |
| Answer» B. slave in slave-transmit mode & master in master-receive mode | |
| 37. |
process that is based on IPC mechanism which executes on different systems and can communicate with other processes using message based communication, is called ________ |
| A. | local procedure call |
| B. | inter process communication |
| C. | remote procedure call |
| D. | remote machine invocation |
| Answer» D. remote machine invocation | |
| 38. |
Bytes of data being transferred in each connection are numbered by TCP. These numbers start with a _________ |
| A. | fixed number |
| B. | random sequence of 0’s and 1’s |
| C. | one |
| D. | sequence of zero’s and one’s |
| Answer» E. | |
| 39. |
Which scheme/ strategy is suitable to establish the communication between the access point (AP) and the infrastructure of LANs? |
| A. | non-reception of frame & necessity of retransmission |
| B. | no necessity of working in duplex mode for the host |
| C. | no necessity to prevent the signal fading |
| D. | all of the above |
| Answer» B. no necessity of working in duplex mode for the host | |
| 40. |
Unauthorised access of information from a wireless device through a bluetooth connection is called _________ |
| A. | bluemaking |
| B. | bluestring |
| C. | bluestring |
| D. | bluesnarfing |
| Answer» E. | |
| 41. |
What does an IC that initiate or enable the data transfer on bus can be regarded as, in accordance to the I2c protocol specifications? |
| A. | bus slaves |
| B. | bus master |
| C. | bus drivers |
| D. | bus data carriers |
| Answer» C. bus drivers | |
| 42. |
In a chip, which type/s of pad design/s is/are adopted to solve the problem of pin count? |
| A. | input pad design |
| B. | output pad design |
| C. | three state pad design |
| D. | all of the above |
| Answer» D. all of the above | |
| 43. |
 In a chip, which type/s of pad design/s is/are adopted to solve the problem of pin count? |
| A. | input pad design |
| B. | output pad design |
| C. | three state pad design |
| D. | all of the above |
| Answer» D. all of the above | |
| 44. |
What is the format of IP address? |
| A. | 34 bit |
| B. | 16 bit |
| C. | 64 bit |
| D. | 32 bit |
| Answer» E. | |
| 45. |
Maze routing is used to determine the _______path for a single wire between a set of points, if any path exists. |
| A. | shortest |
| B. | average |
| C. | longest |
| D. | none of the above |
| Answer» B. average | |
| 46. |
Many desktops and operating systems include which protocol? |
| A. | ipv6 protocol |
| B. | ipv4 protocol |
| C. | both ipv6 and ipv4 protocol |
| D. | ipv3 protocol |
| Answer» B. ipv4 protocol | |
| 47. |
What does I2C stand for? |
| A. | inter-ic |
| B. | intra-ic |
| C. | individual integrated chip |
| D. | intel ic |
| Answer» B. intra-ic | |
| 48. |
Which are the two lines used in the I2C? |
| A. | Â sda and spdr |
| B. | spdr and scl |
| C. | sda and scl |
| D. | scl and status line |
| Answer» D. scl and status line | |
| 49. |
A packet is also referred to as |
| A. | postcard |
| B. | telegram |
| C. | letter |
| D. | data |
| Answer» C. letter | |
| 50. |
WLANs use high power levels and generally require a license for spectrum use. (True or False) |
| A. | true |
| B. | false |
| Answer» C. | |