Examination paper: Telecom Management
IIBM Institute of Business Management 1
IIBM Institute of Business Management
Examination Paper MM.100
Telecommunications Essentials
Section A: Objective Type (30 Marks)
•This section consists of Multiple Choice questions and short notes type questions.
•Answer all the questions.
•Part one questions carry 1 mark each & Part Two questions carry 4 marks 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 of the above
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
c. DVB-C
d. DVB-S & DVB-S2
Examination paper: Telecom Management
IIBM Institute of Business Management 2
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 of the above
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?
5. Briefly explain the major layers of IPT network taxonomy.
END OF SECTION A
Examination paper: Telecom Management
IIBM Institute of Business Management 3
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.
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.
Examination paper: Telecom Management
IIBM Institute of Business Management 4
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.
Questions:
1. Why might portable computing and desktop computing call for different types of microprocessors?
2. Review the performance variables. In which areas did the Transmeta chip try to excel?
END OF SECTION B
Examination paper: Telecom Management
IIBM Institute of Business Management 5
Section C: Applied Theory (30 Marks)
•This section consists of Applied Theory Questions.
•Answer all the questions.
•Each question carries 15 marks.
•Detailed information should from the part of your answer (Word limit 200 to 250 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, CdmaOne & PDC technologies of digital cellular.
END OF SECTION C
IIBM Institute of Business Management 1
IIBM Institute of Business Management
Examination Paper MM.100
Telecommunications Essentials
Section A: Objective Type (30 Marks)
•This section consists of Multiple Choice questions and short notes type questions.
•Answer all the questions.
•Part one questions carry 1 mark each & Part Two questions carry 4 marks 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 of the above
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
c. DVB-C
d. DVB-S & DVB-S2
Examination paper: Telecom Management
IIBM Institute of Business Management 2
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 of the above
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?
5. Briefly explain the major layers of IPT network taxonomy.
END OF SECTION A
Examination paper: Telecom Management
IIBM Institute of Business Management 3
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.
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.
Examination paper: Telecom Management
IIBM Institute of Business Management 4
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.
Questions:
1. Why might portable computing and desktop computing call for different types of microprocessors?
2. Review the performance variables. In which areas did the Transmeta chip try to excel?
END OF SECTION B
Examination paper: Telecom Management
IIBM Institute of Business Management 5
Section C: Applied Theory (30 Marks)
•This section consists of Applied Theory Questions.
•Answer all the questions.
•Each question carries 15 marks.
•Detailed information should from the part of your answer (Word limit 200 to 250 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, CdmaOne & PDC technologies of digital cellular.
END OF SECTION C
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