MCA : Practice Questions and Answers

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 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.

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 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.

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.

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.

Examples of different types of wireless communication devices are mobiles, Zigbee wireless technology, Cordless telephones, GPS, satellite television, Wi-Fi, and wireless computer parts.

No explanation is available for this question yet.

No explanation is available for this question yet.

Mobile communication is use of technology that allows users to communicate from different locations without the use of physical medium (wires or cables).

The hit rate is an important factor in performance measurement.

The dirty bit is used to show that the block was recently modified and for a replacement algorithm.

The tag is used to identify the block mapped onto one particular cache block.

This indicates that the operation has missed and it brings the required block into the cache.

When the cache location is updated in order to signal to the processor this bit is used.

The ISO is yet another architectural standard, used to design systems.

To have 8 data lines and 19 external connections it has to have 9 address lines(i.e 512 x 8 organisation).

The flash drives have been developed to provide faster operation but with lesser space.

The flash memory functions similar to the EEPROM but is much cheaper.

By using voltage swings to transfer data, the transfer rate along with efficiency is improved.