Telecommunications Essentials IIBM EXAM ANSWER SHEETS PROVIDED. MBA EMBA BMS DMS ANSWERS PROVIDED. DR. PRASANTH MBA PH.D. DME MOBILE / WHATSAPP: +91 9924764558 OR +91 9447965521 EMAIL: prasanththampi1975@gmail.com WEBSITE: www.casestudyandprojectreports.com
This section consists of Multiple Choice questions, and short notes.
Answer all the questions.
Part one questions carry 1 mark each & Part Two questions carry 4marks each.
Part One:
Multiple Choices:
1. This band transmits uplink around the 6GHz range & downlink around the 4GHz range.
a. C-Band
b. Ku-Band
c. Ka-Band
d. L-Band
2. On these trunks, traffic flows in both the incoming & outgoing directions.
a. DOD trunks
b. DID trunks
c. Two-way local exchange trunks
d. None
3. As networks become more digitized, fewer conversions take place, and voice can be carried at a higher quality over fewer flower bits per second.
a. PCM
b. ADPCM
c. DCSs
d. DLCs
4. _____________ is a standard for storage & retrieval of moving pictures & audio on storage media.
a. MPEG-1
b. MPEG-2
c. MPEG-4
d. MPEG-7
5. It is an open standard for digital video transmission over cable that was defined by ETSI & ratified in 1994.
a. DVB-H
b. DVB-T
Examination paper of Telecom Management
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c. DVB-C
d. DVB-S & DVB-S2
6. It is the oldest of DSL technologies & a symmetrical service, measuring that it provides equal bandwidth in the both directions.
a. HDSL
b. SDSL
c. G. SHDSL
d. ADSL
7. It is the newest spread spectrum technique, and its main purpose is to resolve the problems
a. CDMA
b. TDMA
c. OFDM
d. ADPCM
8. It is a new concept in multimedia mobile broadcasting service, converging broadcasting and telecommunications.
a. DMB
b. OFDM
c. VF
d. None
9. It is a Niche broadband wireless technology that at first appears to complete for market share with mobile WiMax & Mobile-Fi.
a. HiperAccess
b. HiperMan
c. iBursrt
d. ETSI BRAN
10. In-FUSIO’s (www. Infusion.com) __________ is best known for its business model, which supports a variety of revenue models, including pay-per-level and SMS high scores.
a. JavaME
b. BREW
c. EXEn
d. Mophun
Part Two:
1. State the protocols & implementations which are associated with Mesh Network.
2. Write a short note on HFC Architecture and draw the topology of an HFC network.
3. What is the IP multimedia system?
4. What is Symmetric Encryptions?
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5. Briefly explain the major layers of IPT network taxonomy.
Section B: Caselets (40 Marks)
This section consists of Caselets.
Answer all the questions.
Each Caselet carries 20 marks.
Detailed information should form the part of your answer (Word limit 150 to 200 words).
Caselet 1
“DoCoMo (meaning ‘anywhere’ in Japanese) is a NTT subsidiary and Japan’s biggest mobile service provider, with over 31 million subscriber as of June 2000. In February 1999, NTT DoCoMo launched its i-mode service. Within one year, it had over four million subscribers, and within another six months it went up to eight million and had overtaken other Japanese Internet service providers (ISPs) that provide service to the desktop. DoCoMo’s i-mode is the only network in the world that now allows subscribers continuous access to the Internet via mobile telephone. The service lets uses send and receive e-mail, exchange photographs, do online shopping and banking, obtain financial information, download personalized ringing melodies for their phones, and navigate among more than 7,000 specially formatted Web sites.” Additional content such news and games is offered on a subscription basis in the range of $ 1 to $ 3 per month.
Since i-mode service is used through cell phones with tiny screens, the types of interaction and graphical displays expected by World Wide Web users are not possible. I-mode was built using IP and a subset of HTML. The initial version operated at only 9.6 Kbps, slower than the 56 Kbps modems that often seem very slow for downloading Internet graphics. The 9.6 Kbps data rate was initially adequate, however, because most of the data was text.
I-mode’s pricing model is totally different from the fixe4d-rate U.S. model or a time-metered European model. I-mode charges are based on the number of packets of data sent per month. The more requests for Web pages or e-mail that a user sends, the higher the total charge. I-mode users pay a $3 flat monthly fee for unlimited access to mobile data services. Additional charges are applied on a per packet basis. Another source of revenue for DoCoMo a 9% gross commission. Although pay-per-use content accounts for only 20% of all i-mode content, 70% of i-mode users subscribe to these services, generating an additional $1 per customer per month in billing and collection commissions for DoCoMo
I-mode is so popular in Japan that the primary method of Internet access in Japan could soon be through mobile phones and other portable devices. DoCoMo announced that Internet access would be an option on every phone it sells.
NTT DoCoMo has looked at ways to penetrate the U.S. market. Some observers are skeptical about whether i-mode would succeed elsewhere. They note that Japan may be a unique market, with unique characteristics that, may not exist elsewhere, such as a huge audience interested I using the Internet, culturally specific content, and a huge commuting population. According to one analyst, successful mobile applications are highly specific to cultures and national demographics. What flies in Japan won’t necessarily fly in the States or Europe.
END OF SECTION A
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Questions:
1. How does this case demonstrate the importance of data transmission rates in business? Does it imply that people in Japan are willing to accept lower data rates than people in the U.S.?
2. Some people say that the Internet fosters globalization by providing world wide access to the Web. Discuss arguments for and against this statement.
Caselet 2
Transmeta Corporation was founded in 1995 to build a new type of computer chip directed at mobile applications that rely on battery power to run laptop computers and other portable devices. The company said nothing about its product until an unveiling on January 19, 200. By October 2000, NEC, Sony, and Fujitsu had all launched notebook computers based on its Crusoe chip. Sony said it will use the processor in its new Vaio Picture Book CIVN notebook, and Transmeta claimed that Crusoe should nearly double the battery life of the new model. Transmeta’s Crusoe product is actually a family of processors. The TM3200 is designed to pro-vide a full a day of Web browsing on a single battery charge for mobile Internet devices weighing one to two pounds. The TM5400 and TM5600 are designed to solve the problems of poor battery life and sub-par performance in the ultra-light mobile PCs. Per-forming at 700 MHz, TM5400/5600-based laptops can last up to eight hours on battery power when running everyday office applications, and three to four hours running heavy-duty multimedia applications like DVD movies.
Major challenges in designing Transmeta’s Crusoe chip centered on reducing the chip’s power consumption while still supporting applications that ran on Intel’s 86xx line of processors. Transmeta applied a unique design that shifted the balance of work between hardware and software. According to Transmeta, “The hardware component is a very simple, high-performance, low-power VLIW (very Long Instruction Word) engine with an instruction set that bears no resemblance to that of x86 processors. Instead, it is the surrounding software layer that gives programs the impression that they are running on 86x hardware. This innovative software layer is called the Code Morphing software because it dynamically ‘morphs’ x86 instructions into the hardware engine’s native instruction set. This unique approach to executing x86 code eliminates million of transistors, replacing them with software. As first, Transmeta chips were being incorporated into portable products there was some controversy about the importance of the power saving afforded by the Crusoe chip. Transmeta claimed that “the chip consumes around one watt of power when running, compared with an Intel Pentium’s 15 to 20 watts. This means it uses significantly less battery power, and enables light-weight notebooks to work for up to eight hours. In standby mode, the chip consumes around 20 milliwatts of power”. A Toshiba product manager was not greatly impressed, saying that the chip does give an increase in battery life but that the back light on a sub notebook computer also consumes a lot of power. He thought the battery life advantage in this market would be no more than 30% to 40%. After IBM decided not to go ahead with the Crusoe for its new product, a spokes-woman said, “The IBM 480 notebook has a battery life of 4.5 hours and it was hoped that Crusoe would extend this to eight hours. However, Crusoe only managed 5.5 hours in IBM’s benchmarking test.” A Gartner Group consultant said,” The main issue is performance. The chip uses emulation or ‘code morphing’ and therefore does not give the same performance as you get with Intel…..the reason IBM moved away from the chip is that either there was not enough power or there was not enough performance.” There was no guarantee that the Crusoe chip or Transmeta would succeed, especially since Intel and other companies were developing chips for the same market.
Examination paper of Telecom Management
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Questions:
1. Why might portable computing and desktop computing call for different types of micro-processors?
2. Review the performance variables. In which areas did the Transmeta chip try to excel?
Section C: Applied Theory (30 Marks)
This section consists of Long Questions.
Answer all the questions.
Each question carries 15 marks.
Detailed information should from the part of your answer (Word limit 200 to 150 words).
1. DNS is a distributed database system that operates on the basis of a hierarchy of names. Explain the statement & also explain how DNS servers work.
2. Explain the workings of GSM, UWC, Cdma One & PDC technologies of digital cellular.
END OF SECTION B
END OF SECTION C
Examination paper of Telecom Management
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IIBM Institute of Business Management
Examination Paper MM.100
Telecom Technologies
Section A: Objective Type (30 marks)
This section consists of Multiple Choice questions & short note questions.
Answer all the questions.
Part one questions carry 1 mark each & Part Two questions carry 4 marks each.
Part One:
Multiple Choices:
1. Which technology is among the early starter in providing VoWiFi solutions for enterprises with wireless networks?
a. Symbol Technologies
b. Vocera Technologies
c. Spectra link Technologies
d. None
2. In wireless networks ___________ refers to the measure of the performance for a system reflecting its transmission quality & service availability.
a. Internet speeds
b. Quality of Service (QOS)
c. Interoperability
d. Line of Sight
3. A single IP-based core network handling the full range of telecom services.
a. Power line Communication (PLC)
b. VOIP
c. OFCOM
d. Next Generation Networks
4. Which country has the strong competitive broadband market with a penetration of 16%.
a. India
b. USA
c. Japan
d. China
5. Out of the following which project aims to substantially replace all of Bt’s existing network platform (PSTDN, ISDN etc) with a single unified IP platform.
a. ADSL2
b. 21CN
c. ATM
Examination paper of Telecom Management
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d. SHDS
6. Which generation of mobile telephony will serve both voice & data applications?
a. 1G
b. 2G
c. 3G
d. 4G
7. This is a high bandwidth wireless networking service that operates in the frequency spectrum of 28-31 GHz range.
a. MMDS
b. LMDS
c. BW
d. None
8. Which management establishes the right architecture to deliver more products, better leveraging development & deployment expenditures?
a. Product Portfolio Management
b. Partner Management
c. Platform Management
d. None
9. ___________ Frequencies allow multiple service providers to utilize the same section of the spectrum & compete with each other for customers.
a. Licensed
b. Unlicensed
c. Both
d. None of the above
10. LAS-CDMA stands for ____________________.
Part Two:
1. What is Backhauling solution?
2. What is Broadband?
3. What is WiMAX?
4. What is THIPON?
5. What is a VOWiFi?
END OF SECTION A
Examination paper of Telecom Management
IIBM Institute of Business Management 8
Section B: Caselets (40 Marks)
This section consists of Caselets.
Answer all the questions.
Each Caselet carries 20 marks.
Detailed information should form the part of your answer (Word limit 150 to 200 words).
Caselet 1
Recently the FCC has adopted new rules governing “broadband wireline Internet access services” that remove regulatory obligations on the local telephone companies, while imposing regulation on ISPs. The results could have a significant effect on the market for broadband information services.
In the Broadband ISP Order, the FCC ruled that, following a one –year transition period, local telephone companies that provide broadband Internet access over their facilities will no longer be required to comply with the Computer Rules. As a result, ISPs will no longer have a legal right to purchase broadband transmission services from the local telephone companies at regulated tariff rates. The commission asserted that the Computer Rules are no longer necessary because “ a wide variety of competitive and potentially competitive providers and offerings- such as cable broadband transmission, satellite, wireless and power line-are emerging.”According to Commission the Computer Rules actually harmed ISPs by decreasing operators’ incentives to invest in broadband infrastructure. The Commission also noted that this would result in telephone companies being regulated in the same manner as cable operators, which generally are not required to provide “open access” to ISPs.
At the same time that the FCC released the wireline carriers from their historic regulatory obligations, the agency asserted that the Communications Act gives it right to impose on currently unregulated ISPs regulatory obligations that “mirror” those traditionally imposed on telephone companies.
Because of this ISPs that want to provide a high-speed service rather than purchasing broadband transmission services from local telephone companies at regulated, tariff rates, will need to either: negotiate commercial agreements with telephone companies and cable operators; deploy their own transmission facilities; or be acquired by a facilities-based operator. Negotiating commercial agreements may be difficult. Several major telcos are already discussing the possibility of charging premium prices to ISPs that use their network. The end result is likely to be significant consolidation in the US information services market. This, in turn, could lead to higher prices, reduced innovation and less service diversification.
At the same time, introduction of new regulation could slow deployment of new services, such as VoIP, which have generally been treated as unregulated information services. The FCC has already ruled that “interconnected” VoIP providers must comply with existing rules-previously applied only to telephone companies-requiring operators to provide emergency operator services and assistance to law enforcement. Because the FCC has not adopted a definition of what entities constitute “wire line broadband Internet access providers,” the FCC could seek to apply these regulatory requirements to any service provider that offers a suite of IT/information services that includes the ability to access the Internet over a broadband wireline connection.
Required:
Comment on the strategy which is adopted by the FCC “broadband wireline Internet access services” is fruitful or not?
Examination paper of Telecom Management
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Caselet 2
When operators and investors consider starting down the road of network building, they need considerable information to prove their business plan and persuade their spectrum regulator to provide sufficient allotment. This was exactly the situation when a consultancy group approached ATDI on behalf of their overseas client.
The task was to provide the consultants with a GSM/3G network plan for all the primary cities and link these to form a national plan for a sizeable country. All of this had to be achieved within 2 weeks. The network design was for business plan analysis and spectrum application and therefore indicative sites with indicative topology were required to scope the network. The technology was 2G although the concept applies equally to 2.5g and 3G.
With traditional, manual methods of approach it would be impossible to meet the task objective set out above. There are two clear constraining factors- the size of the network and the timescale available.
The approach proposed by ATDI applied technology to the problem. It used IT and software technology to remove the need for costly man days of effort. And it used complete automation ensuring that the result was deterministic. In essence the method used highly skilled engineers to set up the modeling tools in automatic mode and then machine time to complete the work thereby achieving the ultimate in efficiency. The method proposed to the consultants was ATDI’s network auto-planning methodology.
ATDI used fifteen instances of their ICS Telecom radio-modeling tool to ensure that the tight timescales were met. Several days were reserved for preparations of the methods to be used and to document what parameters were used and why.
One of the first steps in auto planning is to define what user population is to be converted. In this piece of work the following information was known:
The extent of each city delineated by a vector.
How many people were in the city defined by a population database?
How many people the network should support in each year of its life. Traditionally, cell planning tools express coverage as color overlaid on terrain.
The representation is rather crude compared to what can be achieved-particularly considering that subscribers can be represented individually or as population groups. This subscriber concept was used within ICS Telecom to model users in this project. This concept places a subscriber at a point on the screen that the auto-planned network must cover. Each of these virtual subscribers was used to represent a real user on the ground.
The method proposed and subsequently used by ATDI to produce the required information was completely successful. The measure of the success of this methodology was that:
The 2 week deadline was met.
2 Engineers were used and hence the cost saving was realized.
All the required deliverables were supplied. The cost benefit to the consultants was considerable when compared to traditional network planning approaches. The final cost of the job was a fraction of the cost of manual methods.
Questions:
1. Explain the concept of ATDI.
2. What are the measures which are behind the success of the ATDI methodology?
Examination paper of Telecom Management
IIBM Institute of Business Management 10
3. What is GSM/3G technology?
4. Write down the steps which are to be known in auto planning.
Section C: Applied Theory (30 Marks)
This section consists of Long Questions.
Answer all the questions.
Each question carries 15 marks.
Detailed information should from the part of your answer (Word limit 200 to 150 words).
1. WiFi/mobile roaming and VoWiFi may play an important role for fixed-mobile convergence. Explain.
2. Does a ‘light touch’ regulation regime make sense within the NGN environment? What benefits & risks do you see with a ‘light-touch’?
S-2-301012
END OF SECTION B
END OF SECTION C
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