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.

Why mixer nd grinder Is example of constant torque load not variable torque load ???

0 Answers  

sir, i preparing hpcl,ongc,barc,hal exams(instrumentation engg)pls send a placement papers

2 Answers   BARC,

when the operation engineer told you that he gives the control valve order to open but there is no response ! what will you do ? and if you found that there is astuck , what will you do ? (note : it is apanumatic valve )

5 Answers  

What is the working principle of Dozing valve used in cement industry?

1 Answers  

What is difference of fanuc alpha series 16i and 18i controller.also what is differnce betn TC and MC controller

0 Answers  

regarding level tx i would like to know how to select the range of the level transmitter in a closed drum(steam drum or deaerator)?

1 Answers  

Where we r using split range and ratio controller?

1 Answers   EID Parry,

why can't we use 5-20mA standard or some other instead of 4- 20mA?

6 Answers   Emerson,

How would you choose differential range?

0 Answers  

What is the difference between working pressure and calibration pressure of a control valve

0 Answers  

what happens when the profibus fails while in operation (operation of a valve)?

5 Answers   L&T,

When a timer is placed in RS Logix 5000 with preset value less than its scan time it is malfunctioning. i.e., if the preset is set to 30ms still the timer TT bit is counting till 150ms(its scan time). Any solution for the problem?

2 Answers   Balco,