multiplexing+campur gatau Flashcards

1
Q

multiplexing digunakan agar

A

banyak source transmisi dapat membagi/menyalurkan ke kapasitas transmisi yang lebih besar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

2 bentuk umum multiplexing adalah?

A
  • frequency division multiplexing (FDM)

- time division multiplexing (TDM)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

FDM dapat digunakan dengan sinyal?

A

analog

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

TDM dapat digunakan dengan sinyal?

A

digital atau analog sinyal yg carry digital data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

cara kerja FDM?

A

beberapa sinyal dibawa dalam suatu medium secara serempak dengan cara mengalokasikan tiap sinyal dengan frequency band yg berbeda. selanjutnya alat modulation dibutuhkan untuk memindahkan tiap sinyal ke dalam frequency band yg cocok dan alat multiplexing dibutuhkan dalam hal untuk menggabungkan sinyal-sinyal yg sudah termodulasi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

cara kerja TDM?

A

data dari berbagai sources dibawa dalam repetitive frames. tiap frame punya suatu set time slots, tiap source di assign sat/lebih time slot per frame. efeknya adalah untuk menyelipkan bit data dari berbagai sources

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

TDM v statistical TDM?

A

di statistical TDM time slot nya ga di-assign ke particular data source, tapi user data nya di-buffer dan trasmisikan secara cepat pakai time slot yg lagi available

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

bagaimana gangguan/interference diabaikan dalam frequency division multiplexing

A

dengan memanfaatkan guard bands, yaitu bagian tak terpakai dalam frequency spectrum diantara subchannels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

define upstream dan downstream dalam subscriber lines?

A
upstream= traffic flow dari subscriber/customer ke carrier
downstream= traffic flow dari carrier ke subscriber/customer
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

beda NA carrier standards dengan international TDM carrier standards

A

NA DS-1 punya 24 channels, international TDM punya 30 channels. NA standardnya 1.544 Mbps international 2.048 Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

kenapa multiplexing cost effective?

A

karena higher data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

apa itu echo cancellation?

A

sebuah teknik proses sinyal yang mengizinkan transmisi sinyal digital kedua arah dalam satu single transmission line secara barengan

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is network topology?

A

refers to the way the end parts or stations attached to the network are interconnected

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

4 common LAN topologies

A

bus, tree, ring, star

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

guna IEEE 802 committee

A

develop LAN standards, yaitu ethernet family, token ring, wireless LAN, wireless PAN, wireless MAN, bridging dan virtual bridges LANs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

LAN standard IEEE 802.11b

A

pakai radio transmission at 2.4 GHz. data send up to 11 Mbps. indoor range 100-150 feet

17
Q

LAN standard IEEE 802.11g

A

paka transmission at 2.4 GHz. data send up to 54 Mbps. indoor range 100-150 feet

18
Q

LAN standard IEEE 802.11a

A

5.0 Ghz. data send at 54 Mbps. indoor range 25-75 feet