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business communication process

Questions and Answers of Business Communication Process

Under what circumstances would you use GEOS, LEOS, and MEOS, respectively?
Explain what GEOS, LEOS, and MEOS satellites are (including what the acronyms stand for). Compare the three types with respect to factors such as size and shape of orbits, signal power, frequency
List and briefly explain the fields in an ATM cell.
List and briefly define the ATM service categories.
In every area of the country, the services available from carriers can vary. Determine the following for your area:a. What types of service are the most prevalent?b. What would be the cost of these
List all 16 possible values of the GFC field and the interpretation of each value (some values are illegal).
One key design decision for ATM was whether to use fixed- or variable-length cells.Let us consider this decision from the point of view of efficiency.We can define transmission efficiency asa.
Another key design decision for ATM is the size of the data field for fixed-size cells.Let us consider this decision from the point of view of efficiency and delay.a. Assume that an extended
Consider the following applications. In each case indicate whether you would use X.25, frame relay, or ATM facilities. Assume that the facilities are available and “competitively”priced (i.e.,
Consider compressed video transmission in an ATM network. Suppose standard ATM cells must be transmitted through 5 switches.The data rate is 43 Mbps.a. What is the transmission time for one cell
A widely used set of standards employed in local ATM environments is called ATM LAN Emulation (LANE). Provide a basic overview of LANE and describe its place in an organization’s network strategy.
In order to support IP service over an ATM network, IP datagrams must first be segmented into a number of ATM cells before sending them over the ATM network.As ATM does not provide cell loss
What geometric shape is used in cellular system design?
What is the principle of frequency reuse in the context of a cellular network?
List five ways of increasing the capacity of a cellular system.
Explain the paging function of a cellular system.
What is cellular handoff?
For a cellular system, describe the function of the following: control channels and traffic channels.
What is the wireless application protocol (WAP)?
Why does thermal noise place an upper bound on communication system performance?
Describe the phenomenon known as multipath.
What is differential encoding?
What function does a modem perform?
Are the modem and the codec functional inverses (i.e., could an inverted modem function as a codec, or vice versa)?
Indicate three major advantages of digital transmission over analog transmission.
How are binary values represented in amplitude shift keying, and what is the limitation of this approach?
Indicate the major categories into which modems may be classified based on their data rates.
What is NRZ-L? What is a major disadvantage of this data encoding approach?
Match the device or system with the correct type of signal and data. Device/System Modem transmissions Ethernet AM/FM radio PCM Data/Signal A. Digital data/digital encoding B. Digital data/analog
How is the transmission of a single character differentiated from the transmission of the next character in asynchronous transmission?
What is a major disadvantage of asynchronous transmission?
Research current offerings for frame relay, ATM, and Ethernet MANs, and discuss the relative advantages of each.Haukeland University Hospital is one of the largest hospitals in Norway.The hospital
What transition issues would you expect Haukeland to face in going from the frame relay WAN to the Ethernet WAN?Haukeland University Hospital is one of the largest hospitals in Norway.The hospital
Define flow control.
Define error control.
List common ingredients for error control for a link control protocol.
What is the purpose of the flag field in HDLC?
What type of error detection is used in the HDLC frame check sequence field?
What is the difference between amplification and retransmission?
Define channel capacity.
What key factors affect channel capacity?
A signal has a fundamental frequency of 1000 Hz.What is its period?
Express the following in the simplest form you can: a. sin(2ft)+sin(2ft + ) b. sin 2ft+sin(2ft - )
Sound may be modeled as sinusoidal functions. Compare the relative frequency and wavelength of musical notes. Use 330 m/s as the speed of sound and the following frequencies for the musical scale.
If the solid curve in Figure 15.11 represents sin(2 t), what does the dotted curve represent?That is, the dotted curve can be written in the form A sin(2 ft ); what are A,f, and ?
Decompose the signal (1 + 0.1 cos 5t) cos 100t into a linear combination of sinusoidal functions, and find the amplitude, frequency, and phase of each component. Hint: Use the identity for cos a cos
Find the period of the function f(t) = (10 cos t)2.
Figure 15.4 shows the effect of eliminating higher-harmonic components of a square wave and retaining only a few lower harmonic components.What would the signal look like in the opposite case; that
Given the narrow (usable) audio bandwidth of a telephone transmission facility, a nominal SNR of 56dB (400,000), and a distortion level of a. What is the theoretical maximum channel capacity (Kbps)
Suppose a file of 10,000 bytes is to be sent over a line at 2400 bps.a. Calculate the overhead in bits and time in using asynchronous communication. Assume one start bit and a stop element of length
Demonstrate by example (write down a few dozen arbitrary bit patterns; assume one start bit and a stop element of length 1 bit) that a receiver that suffers a framing error on asynchronous
Suppose that a sender and receiver use asynchronous transmission and agree not to use any stop elements. Could this work? If so, explain any necessary conditions.
An asynchronous transmission scheme uses 8 data bits, an even parity bit, and a stop element of length 2 bits.What percentage of clock inaccuracy can be tolerated at the receiver with respect to the
Suppose that a synchronous serial data transmission is clocked by two clocks (one at the sender and one at the receiver) that each has a drift of 1 minute in one year. How long a sequence of bits can
When President Franklin Delano Roosevelt gave his first inaugural speech—“the only thing we have to fear is fear itself…”—it lasted about 23 minutes. In printed form it takes about 4
Two communicating devices are using a single-bit even parity check for error detection.The transmitter sends the byte 10101010 and, because of channel noise, the receiver gets the byte 10011010.Will
What are the three frame types supported by HDLC? Describe each.
Two documents related to safety concerns associated with wireless media are the FCC OET-65 Bulletin and the ANSI/IEEE C95.1-1999. Briefly describe the purpose of these documents and briefly outline
Compare and contrast wired and wireless LANs.What unique concerns must be addressed by the designer of a wireless LAN network? RIC
Try this experiment: How far can you go and still be connected to your network? This will depend to a large extent on your physical environment.
Most wireless cards come with a small set of applications that can perform tasks similar to Netstumbler. Using your own client software, determine the same items you did with Netstumbler. Do they
There are many free tools and applications available for helping decipher wireless networks. One of the most popular is Netstumbler. Obtain the software at www.netstumbler.com and follow the links
Using what you know about wired and wireless networks, draw the topology of your network.
How much do you know about your wireless network?a. What is the SSID?b. Who is the equipment vendor?c. What standard are you using?d. What is the size of the network?
What is a usage model?
What is the difference between an access point and a portal?
What is the difference between a single-cell and a multiple-cell wireless LAN?
List and briefly define key requirements for wireless LANs.
List and briefly define four application areas for wireless LANs.
Discuss potential problems that can occur in a WLAN environment at St. Luke’s.Hospitals have been some of the earliest adopters of wireless local area networks (WLANs). The user population is
Visit the NetMotion Web site and learn more about the technical approach of the Mobility architecture. Discuss how this approach provides the mobility features of the product.Hospitals have been some
Analyze the advantages of having the FCS field of IEEE 802.3 frames in the trailer of the frame rather than in the header of the frame.
When a collision occurs, IEEE 802.3 systems use an algorithm called binary exponential backoff to calculate the random amount of time the sender must wait before attempting to retransmit the frame.
Token-Ring is an alternative (but largely considered obsolete) technology to Ethernet.Provide a basic overview of Token-Ring and explain why it has largely been effaced by Ethernet as a LAN
Broadband Integrated Services Digital Network (BISDN) is an optical broadband version of ISDN (which provides digital transmission over POTS). BISDN services incorporate several technologies,
An argument that has been ongoing for some time now involves the question as to whether ATM or Gigabit Ethernet is the best choice for a high speed networking solution. Compare these two technologies
Using capture programs such as Ethereal and built in programs like ping, nslookup, and ipconfig, can you find the following information?a. With ipconfig or ifconfig, find your MAC address.b. Capture
Can you determine the type of network interface card installed in your computer?Describe this card in terms of the speed, layer 2 protocol and the type of medium you are using (for example, 10Mbps
What are the transmission medium options for Fast Ethernet?
What is meant by the phrase flat address space?
What is the difference between a hub and a layer 2 switch?
What is CSMA/CD?
Explain why a data rate of 10 Mbps on all LAN segments is increasingly inadequate for many businesses.
The Carlson SAN mixes equipment from a number of vendors.What problems does this raise and what are some management options for dealing with them?Carlson Companies is one of the largest privately
Discuss the pros and cons of consolidating data on a SAN central data facility versus the dispersed arrangement it replaces.Carlson Companies is one of the largest privately held companies in the
Discuss how the Carlson SAN approach addresses the IT goals the company is trying to achieve.Carlson Companies is one of the largest privately held companies in the United States, with more than
Given a transmit power (Pin) of 5 watts and a received power (Pout) of 2.5 watts, what is the calculated loss in dB?
If an amplifier has a 30-dB voltage gain, what voltage ratio does the gain represent?
Fill in the missing elements in the following table of approximate power ratios for various dB levels. Decibels 1 2 3 4 5 6 7 8 9 10 Losses 0.5 0.1 Gains 2 10
Some organizations are implementing wide area networks as a high-speed backbone in order to increase communication efficiency and effectiveness of services throughout a particular region. One such
Develop, in general terms, a cost-effective cable plan (meeting minimal data integrity requirements) for a scientific R&D organization that is building a new five-story research facility. The first
Obtain a piece of Category 3 and a piece of category 5 wiring. Strip back the outer insulation and count the number of twists.You should be able to observe three characteristics of twisted pair
The semiconductor industry requires a large degree of automation in the processing of microelectronics devices. This is primarily due to the fact that extremely small tolerances are required in the
Why are there multiple LAN standards?
What is the purpose of the IEEE 802 committee?
Arrange the following in order from highest to lowest regarding cost: UTP, fiber, and coaxial cable.
Arrange the following in order from highest to lowest regarding bandwidth: UTP, fiber, and coaxial cable.
What are the wavelengths used in fiber optic communication?
What is the difference between unshielded twisted pair and shielded twisted pair?
What are some major limitations of twisted-pair wire?

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