ObjectiveMcq
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Which type of transmission technique is employed by paging system?
Simulcasting
Multicasting
Unicasting
Hybrid
Simulcast is a reliable technique used by paging system by transmitting the same paging signal from multiple paging transmitters at approximately equal times.
MIMO is a smart antenna technology.
False
True
MIMO is one of several forms of smart antenna technology, the others being MISO (multiple input, single output) and SIMO (single input, multiple output). It is an antenna technology for wireless communications in which multiple antennas are used at both the source and the destination.
MIMO was initially developed in the year __________
1990
1985
1960
1970
Since the initial development in the year 1990, MIMO Wireless Communications have become integral part of the most forthcoming commercial and next generation wireless data communication systems.
Space diversity s also known as ________
Time diversity
Frequency diversity
Antenna diversity
Polarization diversity
Space diversity is also known as antenna diversity. It is one of the popular forms of diversity used in wireless communications. Signals received from the spatially separated antenna on the mobile would have essentially uncorrelated envelopes for antenna separation.
_______ is a transmission method used in MIMO wireless communications to transmit encoded data signals independently.
MU-MIMO
Collaborative Uplink MIMO
SM
STTD
Spatial multiplexing is a transmission method used in MIMO wireless communications to transmit encoded data signals independently and separately (so-called streams) from each of the multiple transmit antennas.
Why wireless communication is used?
All of the mentioned
It enables billions of people to connect to the Internet
Makes services more inexpensive
Lowers the cost of network infrastructure
Wireless communications have enabled billions of people to connect to the Internet, allowing them to profit from today’s digital economy. It also allows for economies of scale by lowering the cost of network infrastructure and user devices, making services more inexpensive.
Which of the following is not an example of wireless communication?
Wi-Fi
Mobiles
Landline
Wireless Computer Parts
Examples of different types of wireless communication devices are mobiles, Zigbee wireless technology, Cordless telephones, GPS, satellite television, Wi-Fi, and wireless computer parts.
Which of the following is a type of wireless communication?
WAN
LAN
All of the mentioned
PAN
No explanation is available for this question yet.
What is wireless communication?
Sending data from one location to with the use of physical medium
None of the mentioned
Sending data from one location to another without the use of physical medium
Sending data from one location to another without the use of virtual medium
No explanation is available for this question yet.
What is Mobile communication?
Allows to communicate from same locations with the use of physical medium
Allows to communicate from different locations without the use of physical medium
Allows to communicate from same locations without the use of physical medium
Allows to communicate from different locations with the use of physical medium
Mobile communication is use of technology that allows users to communicate from different locations without the use of physical medium (wires or cables).
The number successful accesses to memory stated as a fraction is called as _____
Hit rate
Access rate
Success rate
Miss rate
The hit rate is an important factor in performance measurement.
The bit used to indicate whether the block was recently used or not is _______
Idol bit
Dirty bit
Control bit
Reference bit
The dirty bit is used to show that the block was recently modified and for a replacement algorithm.
While using the direct mapping technique, in abit system the higher order 5 bits are used for ________
Id
Tag
Block
Word
The tag is used to identify the block mapped onto one particular cache block.
While using the direct mapping technique, in a 32-bit system the higher order 5 bits are used for ________
Write miss
Write hit
Write delay
Write latency
This indicates that the operation has missed and it brings the required block into the cache.
The bit used to signify that the cache location is updated is ________
Flag bit
Reference bit
Update bit
Dirty bit
When the cache location is updated in order to signal to the processor this bit is used.
What does ISO stands for?
Industrial Software Organisation
International Standards Organisation
Industrial Standards Organisation
International Software Organisation
The ISO is yet another architectural standard, used to design systems.
In a 4M-bit chip organisation has a total of 19 external connections, then it has _______ address lines if 8 data lines are there.
8
2
5
9
To have 8 data lines and 19 external connections it has to have 9 address lines(i.e 512 x 8 organisation).
The flash memory modules designed to replace the functioning of a hard disk is ______
Flash drives
DIMM
FIMM
RIMM
The flash drives have been developed to provide faster operation but with lesser space.
The memory devices which are similar to EEPROM but differ in the cost effectiveness is ______
Blue-ray devices
Memory sticks
Flash memory
CMOS
The flash memory functions similar to the EEPROM but is much cheaper.
The data is transferred over the RAMBUS as _______
Packets
Bits
Swing voltages
Blocks
By using voltage swings to transfer data, the transfer rate along with efficiency is improved.
