Subjects
PRICING
COURSES
SIGN IN
Start Free Trial
Chandan K.
Senior Engineer at Ericsson
Tutor Satisfaction Guarantee
Information Technology
TutorMe
Question:

What is HotSpot?

Chandan K.
Answer:

An Internet Access Point where you can connect wirelessly to the Internet using your favorite mobile devices. A wi-fi hotspot is basically a place that allows you to wirelessly connect to the internet through your laptop, smartphone or tablet.

Databases
TutorMe
Question:

How can you manage different database on one system?

Chandan K.
Answer:

A Database Server/System allows the multiple databases to be stored on same machine. Reason behind this : 1) To cut maintenance cost. 2) To cut hardware cost. 3) To cut licence cost. You can install oracle in your system and you can create different Service name / SID's / Databases. For example , I have 2 databases running on my oracle one is used for ABC website and another one is for PQR website. Both of this database don't have relation with each other. If you want you can shutdown any of the database if required without affecting other.

Computer Networking
TutorMe
Question:

What is the difference between a hub, switch, and router?

Chandan K.
Answer:

A Switch learns and directs traffic to the correct users. It does this by reading the physical address where the packets are being sent to and sends it to the corresponding machine based on its switch table. The switch table is a table which consists of a physical address and which switch port the address is plugged into. Like a switch a hub connects multiple LAN segments and sends traffic from one place to another. The difference though is that a hub sends all traffic to all of its ports. So even if message xyz is supposed to go to the computer on port 1 it will be broadcasted to port 1, 2, 3, 4, 5, 6, 7, and 8. Or however many ports you have. Routers connect different segments of networks as opposed to different segments of LANs. They also connect different networks to other networks. For instance you can have a 177.145.211.0 network connected to a 177.155.234.0 network. They use the actual IP to determine where to direct traffic. What is different about routers though is that they can be secured much more dynamically than switches (hubs have virtually no security). For instance a router connects a home network to the ISP and performs NAT (network address translation) as a security feature.

Send a message explaining your
needs and Chandan will reply soon.
Contact Chandan
Ready now? Request a lesson.
Start Session
FAQs
What is a lesson?
A lesson is virtual lesson space on our platform where you and a tutor can communicate. You'll have the option to communicate using video/audio as well as text chat. You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.
How do I begin a lesson?
If the tutor is currently online, you can click the "Start Session" button above. If they are offline, you can always send them a message to schedule a lesson.
Who are TutorMe tutors?
Many of our tutors are current college students or recent graduates of top-tier universities like MIT, Harvard and USC. TutorMe has thousands of top-quality tutors available to work with you.