Defamation of hub

A hub is any connection device. However, its specific meaning is multiple repeater .it is basically used for connection station in a physical star topology. All network required a center location to bring media segment tougher .these center location called hub

DIFFERENT between the hub & switch

S.N	Hub	Switch
1	It is board cast device	It is point to point device
2	It operation on physical layer	It operation on data link layer
3	It is an not intelligent device	It is intelligent device
4	It simple board cast incoming packet	It use switching table to find correct detection
5	It cannot be used to repeater	It can be used to repeater
6	Not a sophisticate device	It is a suffocated  device
7	Very cost	cost

People also ask

Which type of cable is used to connect router to switch?

Summary

Device A	Device B	Cable
Router	Switch	Straight-through Cable
Switch	Switch	Crossover Cable
Switch	Hub	Crossover Cable
Switch	PC	Straight-through Cable

6 more rows

Bridge

As metal of fact bridge operation in the physical layer as well in data link layer . it can be regenerate this signal that it Receiver and data link  layer device , it can check address of source and destination contain frame

There  are two type of bridge

1 transport bridge

2routing bridge

Datalimk layer and transport layer

S.N	Data link layer	Transport layer
1	Communication it through a physical channel		Communication is through a sub net
2	It is not necessary to specific destination router		Explicit addressing of destination is essential
3	Establishing a connection is simple		Initial connection  established is more complex
4	No storage capacity		There is some storage capacity in subnet
5	No addition delay		Delay is introduce due to the storage capacity

Different between guided and unguided media

SN	Guided media	Unguided media
1	The signal energy is contain and guided with in solid medium	The signal energy progagate in the form of unguided  electromagnetic wave
2	Twisted air wires ,coaxial optical fiber cable of example of guided media	Radio infraded light
3	Used for point to point communication direction	Used to radio broadcast
4	Wired media lead to discreate network topology	Wireless media lead to continue net
5	Addition transmission capacity can be produce by addit more wire	It is not possible produce addition capacity
6	Installation costly time consium	Installation need  less timer

Compare  different between  ma

sn	Massage switching	Circuit switching	Packet switching
1	Telegraph network for transmission of voice signal	Telephone network for bi direction real time transfer  between computer	Internet for data  reliable service
2	Tele graph	Telephone modem	Computer
3	Asscii morse	Analog voice pcm	Binary information
4	Digital data over different  transmission media	Analog and digital over transfission media	Digital data over different media
5	Geographic address	Hierachical numbering plan	Hierarchical
6	mannul	Route select	Each packet routed independently
7

ssage and  packet md circuit switching 

computer iii/i part question

computer egg iii/i MIS question,embedded

COUNCIL FOR TECHNICAL EDUCATION AND VOCATIONAL TRAINING

Office of the Controller of Examinations

Sanaothimi, Bhaktapur

Regular/Back Exam – 2070, Chaitra

Program:        Diploma in Computer Eng.                                 Full Marks: 80

Year/Part: III/I (New Course)                                                   Pass Marks: 32

Subject: Management Information System (MIS)              Time: 3 hrs

Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

Attempt Any Five questions.

1. a) What is MIS? Explain the role and impact of MIS in brief. [3+3=6]

    b) Explain the planning in brief. What are the types of ….strategies? [3+3=6]

2. a) What do you mean by security threats and vulnerability? How do you manage security threats? [3+3=6]

    b) What do you mean by ethics? Write short notes on intellectual properly and copyright. [3+3=6]

3. a) Why decision making is important for business. Explain the term data and information with example. [3+3=6]

    b) What do you mean by financial management? Explain the term production management and personal management. [3+3=6]

4. a) Explain knowledge management system in brief. What are the benefits of DSS. [3+3=6]

    b) Explain in brief about enterprise resource planning (ERP) and customer relationship management (RM. [3+3=6]

5. a) What do you mean by transaction processing? Write in brief about application processing and information system processing. [3+3=6]

    b) Define network topology. Explain the types of network topologies. [3+3=6]

6. a) What is business intelligence? Explain the architecture of data warehouse. [3+3=6]

    b) Write short notes on: (Any Two) [2*3=6]

        i)      Supply chain management

        ii)    Classification of information

        iii)   Impact of IT on privacy

        iv)    Knowledge based export system

COUNCIL FOR TECHNICAL EDUCATION AND VOCATIONAL TRAINING

Office of the Controller of Examinations

Sanaothimi, Bhaktapur

Regular/Back Exam – 2070, Chaitra

Program:        Diploma in Computer Eng.                                            Full Marks: 80

Year/Part: III/I (New Course)                                                                     Pass Marks: 32

Subject:          Embedded System                                                                                         Time: 3 hrs

Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

Attempt Any Eight questions.

1.      Define embedded system. Write the example of embedded system. Explain any two in detail.[2+2+6=10]

2.      What are different types of advance serial and parallel high speed bus? Explain any two of each.[4+6=10]

3.      What is DMA? Why it is required? Explain various ways of DMA implementation? [2+2+6=10]

4.      What is interrupt latency? Explain in detail about embedded system interrupt?[2+8=10]

5.      Explain about function queue scheduling architecture with suitable example. [10]

6.      State and explain any five specification of RTOS? List the four application of RTOS. [8+2=10]

7.      Explain basic design of embedded software using RTOS with suitable examples. [10]

8.      With suitable flow chart, list and explain the steps involved in the embedded software development cycle? [10]

9.      Explain the various H/W and S/W development tools used in embedded system? [10]

10.  Explain about the debugging techniques used in embedded system? [10]

The end
COUNCIL FOR TECHNICAL EDUCATION AND VOCATIONAL TRAINING

Office of the Controller of Examinations

Sanaothimi, Bhaktapur

Regular/Back Exam – 2071, Chaitra

Program:        Diploma in Computer Eng.                                            Full Marks: 80

Year/Part: III/I (New Course)                                                                     Pass Marks: 32

Subject:          Embedded System                                                                                         Time: 3 hrs

Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

Attempt Any Ten questions.

1.      Define embedded system with examples. List the basic hardware fundamentals in an embedded system describe any two.[2+3+3=8]

2.      What are basic components built-ins on Microprocessor? Write any four conventions used on schematics.[8]

3.      What are basic interrupt mechanisms? List the steps. [8]

4.      Define shared data problem. Illustrate shared data problem with suitable pseudo code. [8]

5.      Compare Round Robin and Round-Robin with interrupt architecture. [8]

6.      Define semaphores, timer function, mailboxes and pipes. [8]

7.      What is a task in RTOS? Describe the different task-states with a diagram. [8]

8.      How to save power and memory efficiently in any RTOS system design? [8]

9.      Define Host and Target Machine. Write about ROM emulator. [8]

10.  What are the goals of typical testing process? List them. What is assert macro? [8]

11.  Describe the useful abilities of instruction-set simulator. [8]