RHM 3 ESAT PART 2

Which address could be the beginning address of a block of 32 classless addresses?

Which address could be the beginning address of a block of 16 classless addresses?

What is the first address of a block of classless addresses if one of the addresses is 12.2.2.76/27?

The____ mode provides synchronization for the entire stream of bits must. In other words, it guarantees that the data arrive at a fixed rate.

Which of the following is not a type of cable generally used in LANs?

A ___ digital signal includes timing information in the data being transmitted.

For an 8-PSK modulator with an input data rate (fb), equal to 10 Mbps and a carrier frequency of 70 MHz, determine the minimum double-sided Nyquist bandwidth (fN) and the baud.

In decoding a digital signal, the receiver calculates a running average of the received signal power, called the .

One of the oldest and most widely used local-area network is

The______rate defines the number of data elements sent in 1s; the____ rate is the number of signal elements sent in 1s.

Determine the baud and minimum bandwidth necessary to pass a 10 kbps binary signal using amplitude shift keying.

In IPv6_____ address defines single computer.

In IPv6, _____address defines a group of computers with addresses that have the same prefix.

In IPv6,____group of computers. Address defines a

The signal rate is sometimes called the_____rate.

A network that is connected as a node on a network and performs bi-directional communication between two LANs is a

The data rate is sometimes called the rate.

A digital communication scheme uses DQPSK to transmit a compressed PCM audio signal which has a bit rate of 16 kb/s. The chipping rate is 10 to 1. Calculate the number of signal changes (symbols) which must be transmitted each second.

In a ____ scheme, all the signal levels are on one side of the time axis, either above or below.

If the bit rate for an FSK signal is 1200 bps, the baud rate is____ .

____conversion is the process of changing one of the characteristics of an analog signal based on the information in the digital data.

A frequency-hopping spread-spectrum system hops to each of 100 frequencies every 10 seconds. How long does it spend on each frequency?

In___, the phase of the carrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant.

Although MANs are primarily fiber-optic networks, a wireless contender for metropolitan-area networking is known as

A constellation diagram shows us the of a signal element, particularly when we are using two carriers (one in-phase and one quadrature).

Quadrature amplitude modulation (QAM) is a combination of____.

During the busy hour, 1200 calls were offered to a group of trunks and six calls were lost. The average call duration was 3 minutes. Find the traffic offered, the traffic carried, and the traffic lost.

A wireless PAN will not link to which of the following?

_____is an analog multiplexing technique to combine optical signals

The ability of IP to move fast audio and video data over the Internet from a single source to multiple destinations is called

In ___ schemes, the voltages are on the both sides of the time axis. For example, the voltage level for 0 can be positive and the voltage level for 1 can be negative.

In , the level of the voltage determines the value of the bit.

Unwanted ads and solicitations via email fall into the category of

In one's complement arithmetic, if positive 7 is 0111, then negative 7 is ____.

In , the change or lack of change in the level of the voltage determines the value of the bit.

The idea of RZ and the idea of NRZ-L are combined into the___scheme.

Protecting data from interception and protecting the sending and receiving parties from unwanted threats such as viruses and spam on the Internet is referred to as

During the busy hour, 1200 calls were offered to a group of trunks and six calls were lost. The average call duration was 3 minutes. Find the grade of service and the total duration of the periods of congestion.

____ is designed to use the high bandwidth capability of fiber-optic cable.

The idea of RZ and the idea of NRZ-I are combined into the____scheme.

In _____encoding, the duration of the bit is divided into two halves. The voltage remains at one level during the first half and moves to the other level in the second half. The transition at the middle of the bit provides synchronization.

Which of the following is not an advantage of using a fibre channel as a SAN connection?

In____there is always a transition at the middle of the bit, but the bit values are determined at the beginning of the bit. If the next bit is 0, there is a transition; if the next bit is 1, there is none.

In Manchester and differential Manchester encoding, the transition at the middle of the bit is used for _____.

In a fibre channel, the connection to the fiber-optic cable is made through an interface card known as a

The minimum bandwidth of Manchester and differential Manchester is____that of NRZ.

A small program designed to implement some nefarious action in a computer is

In encoding, we use three levels: positive, zero, and negative.

The____ scheme uses data patterns of size 2 and encodes the 2-bit patterns as one signal element belonging to a four- level signal.

The connection between the servers and the storage-area network is made usually by

The_____scheme uses three levels (+V,0, and -V) and three transition rules to move between the levels.

If the bit rate for a 16-QAM signal is 4000 bps, what is the baud rate?

What is the wireless technique that uses thin, inexpensive tags or labels that contain passive radio circuits which can be queried by a remote wireless interrogation unit?

If the baud rate for a 64-QAM signal is 2000, what is the bit rate?

Given an AM radio signal with a bandwidth of 10 KHz and the highest- frequency component at 705 KHz, what is the frequency of the carrier signal?

The linking of one Bluetooth device that serves as a master controller to up to seven other Bluetooth slave devices form what is called a

In___, the peak amplitude of one signal level is 0; the other is the same as the amplitude of the carrier frequency.

How many carrier frequencies are used in BASK?

Which of the following is not an advantage of ultrawideband wireless?

How many carrier frequencies are used in BFSK?

How many carrier frequencies are used in BPSK?

Which of the following is a system of delivering the TV signal to home receivers by way of a coaxial cable?

How many carrier frequencies are used in QPSK?

The constellation diagram of BASK has ___ dots.

A color cathode-ray tube is coated with

The constellation diagram of BPSK has ___ dots.

The constellation diagram of QPSK has_____dots.

Which of the following is not a new display method recently brought to market?

The constellation diagram of 16-QAM has___ dots.

The Federal Communications Commission (FCC) allows kHz for each AM station.

A nonlinear circuit that heterodynes the two IFs and generates the sum and difference frequencies is the

The Federal Communications Commission (FCC) allows_____kHz for each FM station.

The sharing of a medium and its link by two or more devices is called .

Which multiplexing technique transmits analog signals?

Which multiplexing technique transmits digital signals?

On average, during the busy hour, a company makes 120 outgoing calls of average duration 2 minutes. It receives 200 incoming calls of average duration 3 minutes. Find the outgoing traffic.

Which multiplexing technique shifts each signal to a different carrier frequency?

Which multiplexing technique involves signals composed of light beams?

The path from earth to a satellite is called the

_____ utilization is the use of available bandwidth to achieve specific goals.

____ can be achieved by using multiplexing;_____ can be achieved by using spreading.

Direct broadcast satellite TV systems create a signal that can be received by a satellite dish with as small as

The checksum of 1111 and 1111 is _______.

_____is the set of techniques that allows the simultaneous transmission of multiple signals across a single data link.

In a multiplexed system,_____lines share the bandwidth of____link

HDTV uses

The word ___refers to the portion of a___that carries a transmission.

In a group of 10 servers, each is occupied for 30 min in an observation interval of 2 hrs. Calculate the traffic carried by the group.

_____can be applied when the bandwidth of a link (in hertz) is greater than the combined bandwidths of the signals to be transmitted.

Which of the following is not a primary benefit of digital cable?

FSM is an _______technique.

_____ is a digital process that allows several connections to share the high bandwidth of a link.

_____is a digital multiplexing technique for combining several low-rate channels into one high-rate one.

The checksum of 0000 and 0000 is ______.

We can divide ____into two different schemes: synchronous or statistical.

In_____, we combine signals from different sources to fit into a larger bandwidth.

On average, during the busy hour, a company makes 120 outgoing calls of average duration 2 minutes. It receives 200 incoming calls of average duration 3 minutes. Find the total traffic.

______ is a first-generation cellular phone system.

An IPv6 address is _____bits long.

An IPv6 address consists of _____bytes (octets);

To make addresses more readable, IPv6 specifies___notation.

______ is a second-generation cellular phone system.

An electronic system for transmitting graphic information by wire or radio is

An attempt is made to transmit a baseband frequency of 30 kHz using a digital audio system with a sampling rate of 44.1 kHz. What audible frequency would result?

_____is a digital version of AMPS

_____ is a second-generation cellular phone system used in Europe.

Which of the following is a type of private telephone system?

A modulator transmits symbols, each of which has sixty-four different possible states, 10,000 times per second. Calculate the baud rate and bit rate.

_____ is a second-generation cellular phone system based on CDMA and DSSS.

The _____cellular phone system will provide universal personal communication.

Which of the following is currently the leading supplier of long-distance service?

Calculate the number of levels if the number of bits per sample is 16 (as in compact disc audio systems)

In a______handoff, a mobile station only communicates with one base station.