1. The document discusses different types of communication systems and data transmission methods. 2. Communication systems can be categorized based on the type of communication and participants in the communication. Common types include wired, wireless, broadcast, interactive, etc. 3. Data transmission methods include asynchronous transmission where data is transmitted without timing signals, synchronous transmission where data is transmitted based on a timing signal, and isochronous transmission for real-time data like audio and video.

1. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
অধ্যায়: ২
কমমউমিককশি মসকেম ও নিটওয়ামককিং
KwgDwbKkb wm‡÷‡gi aviYv
(Concept of Communication System)

2. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
GB welqwUi cvV †k‡l Avgiv hv wkL‡ev t
1. KwgDwb‡Kkb wm‡÷g I Gi wewfbœ aib m¤ú‡K© Rvb‡ev|
2. †WUv KwgDwb‡Kkb Gi aviYv jvf Ki‡ev|
3. e¨vÛDBW_ m¤ú‡K© Rvb‡ev|
4. †WUv UªvÝwgkb †g_W m¤ú‡K© Rvb‡ev|
5. †WUv UªvÝwgkb †gvW m¤ú‡K© mg¨K aviYv jvf Ki‡ev|

3. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
KwgDwb‡Kkb wm‡÷‡gi aviYv
GK cÿ n‡Z Ab¨ c‡ÿ †Kv‡bv gva¨‡gi
Øviv Z_¨ cÖev‡ni cÖwµqv‡K KwgDwb‡Kkb
ev †hvMv‡hvM ejv nq| KwgDwb‡Kkb n‡jv
†g‡mR †cÖiY I MÖn‡Yi ÿgZv|

4. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
wewfbœ ai‡bi KwgDwb‡Kkb wm‡÷g
†hvMv‡hv‡Mi aib Abyhvqx KwgDwb‡Kkb‡K wb‡gœv³fv‡M fvM Kiv hvq t
K) ev‡qvjwRK¨vj KwgDwb‡Kkb
L) MÖvwdK KwgDwb‡Kkb
M) I‡qf KwgDwb‡Kkb
N) †UwjKwgDwb‡Kkb

5. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
wewfbœ ai‡bi KwgDwb‡Kkb wm‡÷g
e¨w³ I e¯‘i wbwi‡L KwgDwb‡Kkb‡K Pvi fv‡M fvM Kiv hvq| h_v t
1. e¨w³ †_‡K e¨w³
2. e¨w³ †_‡K hš¿
3. hš¿ †_‡K e¨w³
4. hš¿ †_‡K hš¿

6. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
wewfbœ ai‡bi KwgDwb‡Kkb wm‡÷g
wØcvwÿK †hvMv‡hv‡Mi †ÿ‡Î KwgDwb‡Kkb wm‡÷g cuvP ai‡bi| h_v t
1. AcwUK¨vj KwgDwb‡Kkb wm‡÷g
2. †iwWI KwgDwb‡Kkb wm‡÷g
3. Wz‡cø· KwgDwb‡Kkb wm‡÷g
4. nvd Wz‡cø· KwgDwb‡Kkb wm‡÷g
5. U¨vKwUK¨vj KwgDwb‡Kkb wm‡÷g

7. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv KwgDwb‡Kk‡bi aviYv
†WUv KwgDwb‡Kk‡bi Dcv`vb
K. Drm (Source)
L. †cÖiK (Transmitter)
M. UªvÝwgkb wm‡÷g ev gva¨g
(Transmission System or Media)
N. MÖvnK (Receiver)
O. MšÍe¨ (Destination)

8. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
e¨vÛDB_ (Bandwidth)
GKwU wbw`©ó mg‡q †Kvb P¨v‡bj w`‡q
†h cwigvY †WUv ¯’vbvšÍwiZ nq Zvi
cwigvY‡K e¨vÛDB_ wn‡m‡e cwigvc
Kiv nq| †WUv UªvÝwgkb Gi GKK‡K
bps (bit per second) G wnmve Kiv
nq|

9. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
e¨vÛDB_ (Bandwidth)
e¨vÛDB_ GKK wnmve (Units of Bandwidth Measurement)
• bps A_© n‡jv bit per second (1 weU = 1 ev 0)
• kbps A_© n‡jv kilobits per second (1024 weU = 1 wK‡jvweU)
• Mbps A_© n‡jv megabits per second (1024 wK‡jvweU = 1 †gMvweU)
• Gbps A_© n‡jv gigabits per second (1024 †gMvweU = 1 wMMvweU)
• Tbps A_© n‡jv Terabits per second (1024 wMMvweU = 1 †UivweU)

10. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
e¨vÛDB_ (Bandwidth)
KwgDwb‡Kkb MwZi †kªwYwefvM
†WUv UªvÝdvi MwZi Dci wfwË K‡i KwgDwb‡Kkb MwZ‡K wZb fv‡M fvM nq| h_v t
1. b¨v‡ive¨vÛ (Narrowband)
2. f‡qme¨vÛ (Voiceband)
3. eªWe¨vÛ (Broadband)

11. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
weU wmb‡µvbvB‡Rk‡bi Dci wfwË K‡i †WUv UªvÝwgkb c×wZ‡K wZb fv‡M fvM
Kiv hvq| h_v t
1. A¨vwmb‡µvbvm UªvÝwgkb (Asynchronous Transmission)
2. wmb‡µvbvm UªvÝwgkb (Synchronous Transmission)
3. AvB‡mv‡µvbvm UªvÝwgkb (Isochronous Transmission)

12. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
A¨vwmb‡µvbvm UªvÝwgkb (Asynchronous Transmission)
†h c×wZ‡Z †cÖiK Kw¤úDUvi n‡Z
†WUv MÖvnK Kw¤úDUv‡i K¨v‡i±vi
evB K¨v‡i±vi UªvÝwgU nq Zv‡K
A¨vwmb‡µvbvm UªvÝwgkb e‡j|

13. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
A¨vwmb‡µvbvm UªvÝwgk‡bi •ewkó¨vewj/myweavmg~n
1. B›Uvi‡b‡U GB c×wZ †ewk Dc‡hvMx|
2. †cÖiK †h‡Kvb mgq †WUv cvVv‡Z cv‡i Ges MÖvnK Zv MÖnY Ki‡Z cv‡i|
3. †cÖi‡Ki †Kvb cÖvBgvwi †÷v‡iR wWfvB‡mi cÖ‡qvRb nq bv|
4. BÝU‡jkb LiP AZ¨šÍ Kg Ges RwUj mvwK©U QvovB ev¯Íevqb Kiv hvq|

14. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
A¨vwmb‡µvbvm UªvÝwgk‡bi Amyweavmg~n
1. cÖwZwU e‡Y©i mv‡_ GKwU ÷vU© weU I GKwU ÷c weU †cÖiY Ki‡Z nq|
2. GKev‡i †ewk †WUv cvVv‡bv hvq bv|
3. wmb‡µvbvm UªvÝwgk‡bi †P‡q Kg `ÿ|
4. G‡Z †WUv UªvÝwgk‡bi MwZ Kg|
5. †WUv ¯’vbvšÍ‡ii KvR eÜ _vKv Ae¯’vq GwUi UªvÝwgkb gva¨gwU Ae¨eüZ Ae¯’vq c‡o _v‡K|
6. †WUv PjvPj eÜ _vKvi mgq gva¨gwU Ae¨eüZ Ae¯’vq c‡o _v‡K|

15. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
A¨vwmb‡µvbvm UªvÝwgk‡bi e¨envi
1. Kw¤úDUvi n‡Z wcÖ›Uv‡i †WUv ¯’vbvšÍ‡i|
2. wK‡evW© n‡Z Kw¤úDUv‡i †WUv ¯’vbvšÍ‡i|
3. cvÂKvW© wiWvi n‡Z Kw¤úDUv‡i Ges
Kw¤úDUvi n‡Z KvW© cvÂv‡i †WUv ¯’vbvšÍ‡i

16. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
wmb‡µvbvm UªvÝwgkb (Synchronous Transmission)
†h c×wZ‡Z cÖ_‡g †cÖiK †÷k‡bi
cÖvBgvwi †÷v‡iR wWfvB‡m †WUv‡K
msiÿY Kiv nq Ges AZtci †WUvi
K¨v‡i±img~n‡K eøK (hv‡K c¨v‡KUI
ejv nq) AvKv‡i fvM K‡i mgvb
weiwZ‡Z cÖwZev‡i GKwU K‡i eøK
UªvÝwgU Kiv nq Zv‡K wmb‡µvbvm
UªvÝwgkb e‡j|

17. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
wmb‡µvbvm UªvÝwgk‡bi •ewkó¨/myweav
1. cÖwZwU K¨v‡i±v‡ii ci UvBg B›Uvi‡f‡ji cÖ‡qvRb nq bv|
2. GKev‡i A‡bK Z_¨ cvVv‡bv hvq|
3. UªvÝwgkb MwZ A‡bK `ªæZ nq|
4. `ÿZv †ewk|
5. mgq Zzjbvg~jK Kg jv‡M|

18. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
wmb‡µvbvm UªvÝwgk‡bi Amyweav
1. †cÖiK †÷k‡b †cÖi‡Ki mv‡_ GKwU cÖvBgvwi †÷v‡iR wWfvB‡mi cÖ‡qvRb nq|
2. GwU Zzjbvg~jK e¨qeûj|
3. mvwK©U †ek RwUj nq|

19. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
wmb‡µvbvm UªvÝwgk‡bi e¨envi
1. Kw¤úDUvi n‡Z Kw¤úDUv‡i †WUv KwgDwb‡Kk‡b|
2. GK¯’vb †_‡K `~ieZ©x †Kvb ¯’v‡b †WUv ¯’vbvšÍ‡i|
3. GK Kw¤úDUvi n‡Z GKB mg‡q A‡bK¸‡jv
Kw¤úDUv‡i †WUv UªvÝwgk‡bi †ÿ‡Î|

20. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
A¨vwmb‡µvbvm I wmb‡µvbvm †WUv UªvÝwgkb wm‡÷‡gi g‡a¨ cv_©K¨
A¨vwmb‡µvbvm †WUv UªvÝwgkb wmb‡µvbvm †WUv UªvÝwgkb
1) †cÖiK Kw¤úDUvi n‡Z †WUv MÖvnK
Kw¤úDUv‡i K¨v‡i±vi evB K¨v‡i±vi UªvÝwgU
nq|
1) cÖ_‡g †cÖiK †÷k‡bi cÖvBgvwi †÷v‡iR
wWfvB‡m †WUv‡K msiÿY Kiv nq Ges
AZtci †WUvi K¨v‡i±vimg~n‡K eøK AvKv‡i
fvM K‡i cÖwZev‡i GKwU K‡i eøK UªvÝwgU
Kiv nq|
2) `ÿZv Kg| 2) A¨vwmb‡µvbvm UªvÝwgk‡bi †P‡q `ÿZv
†ewk|
3) †WUv UªvÝwgk‡bi MwZ Kg| 3) †WUv UªvÝwgk‡bi MwZ A‡bK `ªæZ nq|

21. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
A¨vwmb‡µvbvm I wmb‡µvbvm †WUv UªvÝwgkb wm‡÷‡gi g‡a¨ cv_©K¨
A¨vwmb‡µvbvm †WUv UªvÝwgkb wmb‡µvbvm †WUv UªvÝwgkb
4) †cÖi‡Ki †Kvb cÖvBgvwi †÷v‡iR wWfvB‡mi
cÖ‡qvRb nq bv|
4) †cÖiK †÷k‡b †cÖi‡Ki mv‡_ GKwU
cÖvBgvwi †÷v‡iR wWfvB‡mi cÖ‡qvRb nq|
5) BÝU‡jkb LiP AZ¨šÍ Kg| 5) GwU Zzjbvg~jK e¨qeûj|
6) UªvÝwgU mgq †ewk jv‡M| 6) UªvÝwgU mgq Kg jv‡M|
7) cÖwZwU K¨v‡i±v‡ii ïiæ I †k‡l ÷vU© Ges
÷c we‡Ui cÖ‡qvRb nq|
7) ÷vU© Ges ÷c we‡Ui cÖ‡qvRb c‡o bv|

22. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
AvB‡mv‡µvbvm UªvÝwgkb (Isochronous Transmission)
GB c×wZ‡Z †cÖiK I cÖvcK †÷k‡bi g‡a¨
†WUv UªvÝwgkb wW‡j me©wbgœ ivLv nq| A_©vr
ci ci `ywU eø‡Ki †WUv UªvÝdv‡ii mgq cÖvq 0
(k~b¨) GKK mgq Kievi †Póv Kiv nq|

23. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
cÖwZev‡i GKmv‡_ KZwU weU †WUv cvVv‡bv hv‡e Zvi Dci wfwË K‡i †WUv
UªvÝwgkb `yB ai‡bi| h_v t
1) wmwiqvj UªvÝwgkb

24. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †g_W
(Methods of Data Transmission)
cÖwZev‡i GKmv‡_ KZwU weU †WUv cvVv‡bv hv‡e Zvi Dci wfwË K‡i †WUv
UªvÝwgkb `yB ai‡bi| h_v t
1) c¨vivjvj UªvÝwgkb

25. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †gvW
(Data Transmission Mode)
†WUv ¯’vbvšÍ‡ii cÖev‡ni Dci wfwË K‡i A_©vr w`‡Ki •ewk‡ó¨i wfwˇZ †WUv
UªvÝwgkb †gvW‡K mvaviYZ wZb fv‡M fvM Kiv nq| h_v t
1) wmg‡cø· (Simplex)

26. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †gvW
(Data Transmission Mode)
†WUv ¯’vbvšÍ‡ii cÖev‡ni Dci wfwË K‡i A_©vr w`‡Ki •ewk‡ó¨i wfwˇZ †WUv
UªvÝwgkb †gvW‡K mvaviYZ wZb fv‡M fvM Kiv nq| h_v t
2) nvd-Wy‡cø· (Half-Duplex)

27. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †gvW
(Data Transmission Mode)
†WUv ¯’vbvšÍ‡ii cÖev‡ni Dci wfwË K‡i A_©vr w`‡Ki •ewk‡ó¨i wfwˇZ †WUv
UªvÝwgkb †gvW‡K mvaviYZ wZb fv‡M fvM Kiv nq| h_v t
3) dzj-Wy‡cø· (Full-Duplex)

28. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †gvW
(Data Transmission Mode)
cÖvc‡Ki msL¨v I †WUv MÖn‡Yi AwaKv‡ii Dci wfwË K‡i †WUv UªvÝwgkb †gvW
wZb cÖKvi| h_v t
1) BDwbKv÷ (Unicast)

29. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †gvW
(Data Transmission Mode)
cÖvc‡Ki msL¨v I †WUv MÖn‡Yi AwaKv‡ii Dci wfwË K‡i †WUv UªvÝwgkb †gvW
wZb cÖKvi| h_v t
2) eªWKv÷ (Broadcast)

30. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
†WUv UªvÝwgkb †gvW
(Data Transmission Mode)
cÖvc‡Ki msL¨v I †WUv MÖn‡Yi AwaKv‡ii Dci wfwË K‡i †WUv UªvÝwgkb †gvW
wZb cÖKvi| h_v t
3) gvwëKv÷ (Multicast)

31. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
cvV g~j¨vqb
†WUv KwgDwb‡Kkb wm‡÷g wewfbœ Dcv`vb, UªvÝwgkb †g_W I
†gv‡Wi Dci wbf©ikxj - ch©v‡jvPbv Ki|

32. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
evwoi KvR
1. †WUv KwgDwb‡Kk‡bi Dcv`vb ev Askmg~n Kx Kx eY©bv Ki|
2. †WUv UªvÝwgkb ¯úxW Kx? wewfbœ cÖKvi †WUv UªvÝwgkb m¤ú‡K© we¯ÍvwiZ wjL|
3. †WUv UªvÝwgkb †gvW m¤ú‡K© we¯ÍvwiZ wjL|
4. wmb‡µvbvm I A¨vwmb‡µvbvm UªvÝwgk‡bi myweav I Amyweav¸‡jv eY©bv Ki|
5. wmb‡µvbvm I A¨vwmb‡µvbvm UªvÝwgk‡bi e¨envi D‡jøL Ki|

33. MD IKBAL HOSSAIN, LECTURER(ICT), ADAMJEE CANTONMENT COLLEGE
GZÿY mv‡_ _vKvi Rb¨ AvšÍwiK ab¨ev`|
নমাোঃ ইকবাল নহাকসি
প্রভাষকোঃ তথ্য ও নযাগাকযাগ প্রযুমি
আদমজী কযান্টিকমন্ট ককলজ
নমাবাইলোঃ ০১৭৩৪-৫৮০৫৩৪
ইকমইলোঃ ikbal.polua@gmail.com
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