IGCSE Computer Science C2 - Data Packet, Packet Switching, Error Detection Method & Encryption

Purchase the slides I used in my videos here:

0:00 Structure of a data packet and packet switching
9:25 Types and modes of data transmission
16:45 USB
19:25 Methods of error detection
21:12 Method 1: Parity Check
28:01 Method 2: Checksum
31:18 Method 3: Echo Check
33:13 Method 4: Automatic Repeat Request
35:20 Method 5: Check Digit
38:32 Symmetric and Asymmetric Encryption

[Harsh_]

Thank you so much, usually I do not write comments but your videos help me greatly while revising

[haneenzahra]

You are literally a lifesaver! I've aced my exams because of you so thank you so much!

[nooraak]

Thank you so much I'm going through your chapter videos while revising/studying you're so helpful. I do my IGCSE exam in 4 days hopefully I do well and I truly appreciate your hard work thank you again!

[andiamruby]

Finally finished first 2 videos and really enjoyed it! Moving to the next one :)

[jamesganleongyi]

You can purchase the slides I use here for personal revision (students) or teaching (teachers) 😉:

[JalalUdDin-mdrw]

i do not go to school i am learning in acadmy but my acadmy teacher cannot teach computer and i was so worried that how will i learn cs but this man changed my life i dont need any teacher he teaches evrything with examples thank you sirr sooo much

[DA-nqdw]

tomorrow is my exam of computer science and im here to watch this knowledgeable video for my practice. thank you teacher and hope my exam goes well and good

[riipaah]

my exams are in 4 days and im soo confused on this topic. thank u so much

[ItsMe-fuyq]

Thanks for the excellent explanation again James Gan!! I understand this topic much more now!

[wanarrbaby]

i literally have an exam this morning and it’s currently 00:29 in my country 😭😭 Thank you soo much for your videoss. lm literally binge watching thesee!!!❤️🙏🏽

[narayanchauhan]

My exam is in 3 days you’re a literal life saver! Thank you so much. I have subscribed you for regular updates. Good work sir!

[theRealCobra]

Great video, helped soooo much you have a great ability to condense the topic so that approaching the books is less harder, one thing pls can you pls explain parity block pls pls!

[aunglinsteve]

bruhh this video really helped me
thanks James

[naduze]

Bro teaches his classmates better than their teacher 😂

[Irtixxa]

It's literally 1 am and tmr is my cs exam, you're literally like my last resort ❤

[cornelius]

I've been using this computer science playlist to study and its been very helpful and entertaining, but i would like to ask if it suits the edexcel igcse? Or is it cambridge only?

[sapphire]

Thank you so much, could you let me know the difference between a router and a node?

[dragnslayer]

my exam is tomorrow and i saw ur video thanks a lot

[RASHIDAKANWAL-kv]

james gan you are my academic jackie chan

[omarbilal]

Hi, I have a question. How would we have 13 data packets if the data is 100KiB because 1000/64 is around 16 data packets required?