Answer / kamal rawat

HUB IS DISTRIBUTED STATION BUT SWITCH IS CHANGEABLE STATION

Answer / rahul saha

hub can be controlled through program and setting
instructions but not generally manual,

switch are generally mechanically / electrically controlled
device.

Answer / sunil kumar

Hub is non managable & switches are managable.

Answer / samrat kar

A hub is a unsophisticated broadcast device. Any packet
entering any port is broadcast out on every port and thus
hubs do not manage any of the traffic. Since every packet is
constantly being sent out through every port, chances of
data collision is more and thus it impedes the smooth flow
of traffic.
A switch isolates ports, meaning the every received packet
is sent out only to the port on which the target may be
found. If proper port is not found, then it will broadcast
the packet to all ports. So using switch network performance
can be greatly increased.

Answer / parmar.ic@gmail,com

hub is basically multiport repeater. They till several
devieces together onto a common connection in essentially a
bus connection.
switche is basically a multiported bridge that can operate
dedicated channels between two distinct station . They are
operate by sorting data packets and sending them to a
specific address.

Answer / keval

hub is used in physical layer while switch are used in data
link layer.

how to make temperature closed loop

1 Answers  

draw the block diagram of a level transmitter ?

0 Answers   Hira Group, Samsung,

what are the installation requirement is common to all flow meter when volumetric flow rate is being measured

1 Answers  

What is purpose of shield wire?

1 Answers   IFFCO,

i want to measure temp of hot sand(welding flux) in closed chamber(around 150 deg C).Which is better thermocouple or thermometer?

1 Answers  

Hi buddies! my name is sachin and i am working as a electrical and instrumentation engineer in a paper plant. right now i am facing a problem and if someone could help me it will be an immense pleasure to me. i am using AC 800M to synchronise DCS500 drives on paper machine and rewinder.communication is on PROFIBUS and we are using NPBA-01 module to link profibus to DC drives.But these days two of these drives are showing a error named FIELDBUS COMM.TIMED OUT and the drives get tripped.I have changed the NPBA module and PROFIBUS cable.So if anyone can do please help me out with this problem.I'll be highly grateful.

0 Answers  

WHAT IS A SYMPTOM OF FAULT WITH THE SPAN OF AN INSTRUMENT? 1)ZERO-POINT AND 100% ARE CORRECT BUT NOT A MID-RANGE. 2)ZERO-POINT IS CORRECT ,BUT 1005 INPUT IS NOT GIVING 100% OUTPUT. 3)LINEARITY PRBS. 4)1005 O/p IS CORRECT BUT ZEO POINT IS WRONG.

1 Answers   Reliance,

what are the difference between conventional and smart transmitter.

1 Answers  

what is datum line?

4 Answers  

please help me to get the below mentioned quires,which i have to submit for my client.[INSPECTION TEST PLAN] 1]I.T.P for Calibration of all instrument. 2]I.T.P for SS tubing. 3]I.T.P for Fire & Gas devices. 4]I.T.P for CCTV & telecommunication. 5] I.T.P for loop checking.

1 Answers  

What is Square Root Extractor for?

9 Answers   Sabic,

How much flow is passing through 6 inch line? There are no gauge, no any transmitters in line.

3 Answers