Question 1
Overview: As an IT Support Specialist, it’s important that you fully grasp how networks work. You may need to troubleshoot different aspects of a network, so it’s important that you know how everything fits together. This assignment will help you demonstrate this knowledge by describing how networks function.
What You’ll Do: In your own words, describe what happens at every step of our network model, when a node on one network establishes a TCP connection with a node on another network. You can assume that the two networks are both connected to the same router.
Answers
Explanation:
Answer--------------------------------------------------------
How your data travels in the network and reaches its destination the complete explanation.
Lets first clear some networking terms:
• Physical layer. The physical device that interconnects the computers, their specification and how the signal is sent over this connection all comes in the physical layer.
• Data link layer. It is basically all about defining a common way to interpret these signal so that a device can communicate with each other. The most common protocol used here is Ethernet.
• Network layer. It allows different networks to communicate with each other using devices called routers
• Transport layer. The transport layer finds which client and server programs are supposed to get that data. The most common protocol used here is TCP/IP.
• MAC address. It is the address embedded in your hardware device (which will constitute a node of the network) permanently during its manufacturing.
• IP address. Unlike the Mac address, it is not permanent and not embedded on any hardware it is the address of network it might change when you are at home connected with the wifi and different when you are connected with the railway station's wifi even the devices in both cases are same.
• TCP port.
A port is a 16-bit number
that's used to direct traffic to specific services running on a networked computer.