My Study Journey

10/11/2017 at 8:21am.

 

11/16/2017 at 4:33pm.

 

11/16/2017 at 5:07PM

 

Here’s my life motto with some slight alterations to relate to you. Take what helps and throw out the rest. Life is a beautiful thing. Don’t waste it away. You never know when life will be over. It is the most permanent thing and you can never go back. Tell people how you feel. Make peace where there is unfinished or unresolved conflicts. You might never get that chance again. What the hell, we have one life to live and we should live it to the fullest. And if something bad strikes you hard, just keep moving forward and don’t let it bring you down. Just keep moving forward and live your life. Never forget your objectives. Make great things happen and do great things. Don’t ever lose sight of your goals. I believe in you. Break out of the ignorance that the crowd chains you to be. Do something great. If you are depressed just keep moving forward. Don’t live for others. Live for yourself and love others. Everyday getting better and better in every way. Those who rely on forces outside of themselves are dominated by them.

Shopkick – Points for gift cards on a scavenger hunt while walking around shops. No money spend needed.

Ibotta – rebates and coupons on your purchases.

Walmart App – sends you gift card with the difference if they find it cheaper in a week.

Wikibuy – Coupon codes generated for online shopping, also tells you if you can get it cheaper somewhere else

Car Parts – RockAuto.com wholesale prices on otherwise expensive car parts.

Amazon Coupon Codes and Reviews – review for codes for free or discounted stuff. always check your email and follow instructions.

Always have direct deposit a portion of you check to a saving account that’s hard for you to easily access.

Work at home. Jobs like telenetwork, or if you can type fast, do the CC on rev.com

Sell your services – fiverr.com

Be an uber driver.

Sell your crap.

Dropship with dhgate.com, wish.com, myleather.com etc.

Cut costs, you don’t need cable, always ask for lower prices, call up brands you like and give them a compliment, they typically send vouches for free stuff or coupons or gift cards.

Take advantage of your warranties.

 

Switch Receives Frame:

• Forward
• Filter (drop)
• Flood (send everywhere exact back where it came from) (unicast)

Builds MAC Address table

• Two mac address are contained in every frame, source and destination.
• Source Mac Address are used to build table
• Uses static entries with port
• Dynamically is usually best

 

Hubs

• one collision domain consisting of all connected hosts
• one broadcast domain containing those same hosts
• allows only one host to transmit at a time

Bridge

• logically segment the network
• lessen the size of colisison domains
• does nothing to segment broadcast domains

Switch

• bring us one host collision domains
• logically segment broadcast domain
• not done by default

 

 

7.  Application

6.  Presentation

5.  Session

4.  Transport

3.  Network

2.  Data Link

1.  Physical

 

Application/Presentation/Session Layers – don’t have associated unit. Data is Data

Transport Layer – segments

Network – Packets

Data Link Layer – Frames

Physical – Bits (ones and zeros)

 

Troubleshooting Methodology

• Problem Isolation – determining at what layer of the OSI model and on what device and links the problem may occur
• Documentation – document the processes you use and the information you find
• Resolve – find the root cause after isolation, document what happened, fix the root cause of the problem, fix the problem
• Escalate – if you can’t fix the issue, send a written escalation to organization or third party with as much info as possible
• Verify and Monitor – carefully verify and monitor your solution to ensure the issue are tury resolved

OSI Model

• It is important to follow the OSI model using either a top down or bottom up approach depending on specific issues.
• Review
  • Application
  • Presentation
  • Session
  • Transport
  • Network
  • Data Link
  • Physical

Please     Do     Not     Throw     Sausage     Pizza     Away