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130+ Embedded Real Time Operating System Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Computer Science Engineering (CSE) .

1.

 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» C. three state pad design
2.

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» A. shortest
3.

What is the format of IP address?

A. 34 bit
B. 16 bit
C. 64 bit
D. 32 bit
Answer» D. 32 bit
4.

Many desktops and operating systems include which protocol?

A. ipv6 protocol
B. ipv4 protocol
C. both ipv6 and ipv4 protocol
D. ipv3 protocol
Answer» A. ipv6 protocol
5.

What does I2C stand for?

A. inter-ic
B. intra-ic
C. individual integrated chip
D. intel ic
Answer» A. inter-ic
6.

Which are the two lines used in the I2C?

A.  sda and spdr
B. spdr and scl
C. sda and scl
D. scl and status line
Answer» C. sda and scl
7.

A packet is also referred to as

A. postcard
B. telegram
C. letter
D. data
Answer» B. telegram
8.

WLANs use high power levels and generally require a license for spectrum use. (True or False)

A. true
B. false
Answer» B. false
9.

Which of the following specifies a set of media access control (MAC) and physical layer specifications for implementing WLANs?

A. ieee 802.16
B. ieee 802.3
C. ieee 802.11
D. ieee 802.15
Answer» C. ieee 802.11
10.

What is the nominal range of Bluetooth?

A. 1 km
B. 10 m
C. 1 m
D. 10 km
Answer» B. 10 m
11.

 Bluetooth operates in which band?

A. ka band
B. l band
C. ku band
D. 2.4 ghz ism band
Answer» D. 2.4 ghz ism band
12.

Which one of the following offers CPUs as integrated memory or peripheral interfaces?

A. microcontroller
B. microprocessor
C. embedded system
D. memory system
Answer» A. microcontroller
13.

Which of the following offers external chips for memory and peripheral interface circuits?

A. microcontroller
B. microprocessor
C. peripheral system
D. embedded system
Answer» B. microprocessor
14.

Which one of the following is the successor of 8086 and 8088 processor?

A. 80386
B. 80286
C. 80288
D. 80388
Answer» B. 80286
15.

Which of the following processor possess memory management?

A. 80286
B. 80386
C. 8086
D. 8088
Answer» A. 80286
16.

Which of the following is false with respect to UDP?

A. connection-oriented
B. unreliable
C. transport layer protocol
D. low overhead
Answer» A. connection-oriented
17.

Beyond IP, UDP provides additional services such as _______

A. routing and switching
B. sending and receiving of packets
C. multiplexing and demultiplexing
D. demultiplexing and error checking
Answer» D. demultiplexing and error checking
18.

What is the header size of a UDP packet?

A. 8 bytes
B. 8 bits
C. 16 bytes
D. 124 bytes
Answer» A. 8 bytes
19.

In TCP, sending and receiving data is done as _______

A. stream of bytes
B. sequence of characters
C. lines of data
D. packets
Answer» A. stream of bytes
20.

Communication offered by TCP is ________

A. byte by byte
B. full-duplex
C. half-duplex
D. semi-duplex
Answer» B. full-duplex
21.

What kind of socket does an external EPROM to plugged in for prototyping?

A. piggyback
B. single socket
C. multi-socket
D. piggyback reset socket
Answer» A. piggyback
22.

Which is the single device capable of providing prototyping support for a range of microcontroller?

A. rom
B. umbrella device
C. otp
D. ram
Answer» B. umbrella device
23.

Which of the following can determine if two masters start to use the bus at the same time?

A. counter detect
B. collision detect
C. combined format
D. auto-incremental counter
Answer» B. collision detect
24.

Which of the following provides an efficient method for transferring data from a peripheral to memory?

A. dma controller
B. serial port
C. parallel port
D. dual port
Answer» A. dma controller
25.

Which among the below stated lines represent the handshaking variant usually and only controlled by the software in the handshaking process?

A. xon/ xoff
B. dcd & gnd
C. txd & rxd
D.  all of the above
Answer» A. xon/ xoff
26.

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» B. bus master
27.

______ is a technology that allows telephone calls to be made over computer networks like the Internet.

A. voip
B. gsm
C. modem
D. cdma
Answer» A. voip
28.

Which development tool can facilitate the creation and modification of source programs in addition to assembly and higher -level languages?

A. compiler
B. linker
C. assembler
D. editor
Answer» D. editor
29.

Which types of an embedded systems involve the coding at a simple level in an embedded 'C', without any necessity of RTOS?

A. sophisticated embedded systems
B. medium scale embedded systems
C. small scale embedded systems
D. all of the above
Answer» C. small scale embedded systems
30.

While designing an embedded system, which sub-task oriented process allocates the time steps for various modules that share the similar resources?

A. simulation and validation
B. iteration
C. hardware-software partitioning
D. scheduling
Answer» D. scheduling
31.

The step where in the results stored in the temporary register is transferred into the permanent register is called as ______

A. final step
B. commitment step
C. last step
D. inception step
Answer» B. commitment step
32.

If an exception is raised and the succeeding instructions are executed completely, then the processor is said to have ______

A. exception handling
B. imprecise exceptions
C. error correction
D. none of the mentioned
Answer» B. imprecise exceptions
33.

For applications that demand very high data-processing requirements, or if double precision floating point calculation is needed, then best choice will be

A. cortex-m0 processor
B. cortex-m3 processor
C. cortex-m7 processor
D. cortex-m0+ processor
Answer» C. cortex-m7 processor
34.

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» A. non-reception of frame & necessity of retransmission
35.

Unauthorised access of information from a wireless device through a bluetooth connection is called _________

A. bluemaking
B. bluestring
C. bluestring
D. bluesnarfing
Answer» D. bluesnarfing
36.

Suppose a TCP connection is transferring a file of 1000 bytes. The first byte is numbered 10001. What is the sequence number of the segment if all data is sent in only one segment?

A. 10001
B. 12001
C. 14000
D. 12002
Answer» A. 10001
37.

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» D. sequence of zero’s and one’s
38.

Which of the following are external pins whose logic state can be controlled by the processor to either be a logic zero or logic one is known as

A. analogue value
B. display values
C. binary values
D. time derived digital outputs
Answer» C. binary values
39.

Which of the following has a quadruple buffered receiver and a double buffered transmitter?

A. intel 8250
B. 16450
C. 16550
D. mc68681
Answer» D. mc68681
40.

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» C. remote procedure call
41.

Which abstraction level undergo the compilation process by converting a sequential program into finite-state machine and register transfers while designing an embedded system?

A. system
B. behaviour
C. rt
D. logic
Answer» B. behaviour
42.

Which characteristics of an embedded system exhibit the responsiveness to the assortments or variations in system's environment by computing specific results for real-time applications without any kind of postponement ?

A. single-functioned characteristic
B. tightly-constraint characteristics
C. reactive & real time characteristics
D. all of the above
Answer» C. reactive & real time characteristics
43.

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» A. master in master-transmit mode & slave in slave-receive mode
44.

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» B. asynchronous connectionless link (acl)
45.

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» B. special function registers
46.

Which standard govern parallel communications?

A. RS232
B. RS-232a
C. CAT 5
D. IEEE 1284
Answer» D. IEEE 1284
47.

Which common bus specification provides the fastest data transfer rate?

A. VL bus
B. ISA
C. PCI
D. All of the above
Answer» C. PCI
48.

Devices that use the ____ bus are self-configuring.

A. EISA
B. ISA
C. MCA
D. PCI
Answer» D. PCI
49.

Which of following is not a valid bus in computer system ?

A. Data Bus
B. Memory Bus
C. Address Bus
D. System Bus
Answer» B. Memory Bus
50.

The AT bus is also known as the ____ bus.

A. 286
B. 8-bit ISA
C. 16-bit ISA
D. ISA
Answer» C. 16-bit ISA

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