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Which two descriptions of CWDM are true? (Choose two)
Suggested Answer: D, E
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31 comments · newest first
PE
Pearlene
11 months ago
Not sure about the 850nm band thing, seems off to me.
EL
Elise
11 months ago
Passive CWDM devices are super efficient, no power needed!
WI
Willie
11 months ago
Wait, does it really share the same window as DWDM?
VA
Val
11 months ago
Totally agree, but I thought it needed amplification for long distances?
TA
Tasia
12 months ago
CWDM can multiplex up to 32 channels!
ST
Stevie
12 months ago
I definitely recall that passive CWDM devices don’t need power, so option E should be one of the correct answers.
ER
Eric
1 year ago
I’m a bit confused about the transmission windows. I thought CWDM and DWDM were different in that regard, so option D seems off to me.
MA
Major
1 year ago
I think option C sounds familiar because I practiced a question about multiplexing with CWDM before.
JU
Jutta
1 year ago
I remember CWDM is often used for shorter distances, so I'm not sure about option A.
LA
Lavonna
1 year ago
Wait, I'm a little confused - does CWDM really use the 850nm band? I thought it was in the 1271-1611nm range. Better double-check that one.
DA
Davida
1 year ago
I'm confident I can get this one right. CWDM is known for its low-cost and passive components, so that's a key detail to look for.
AL
Almeta
1 year ago
Okay, I remember CWDM uses a wider channel spacing than DWDM, so that's a good clue. I'll focus on the options that mention the wavelength bands and channel count.
MI
Michel
1 year ago
Hmm, I'm a bit unsure about the differences between CWDM and DWDM. I'll need to think carefully about which options are true for CWDM specifically.
JO
Johnetta
1 year ago
This looks like a straightforward question on CWDM. I'll start by reviewing what I know about the key characteristics of CWDM.
CO
Cordelia
2 years ago
I'm going with C and E, no doubt. 32 carriers and no power required? Sign me up for that CWDM goodness!
RO
Rolande
2 years ago
User 2: Definitely, having 32 carriers on one fiber without needing power is a game changer.
FE
Fernanda
2 years ago
User 1: I agree, C and E sound like the best options for CWDM.
MA
Mary
2 years ago
Haha, A and B are just trolling us. CWDM is all about that 1550nm band, not the 850nm stuff. And long distances? Nah, that's what DWDM is for.
TA
Taryn
2 years ago
User 2: Totally agree, and it's not for long distances either. That's DWDM territory.
AM
Amos
2 years ago
User 1: Yeah, A and B are definitely misleading. CWDM is all about the 1550nm band.
LA
Lanie
2 years ago
Hmm, I think C and D are the right choices. CWDM may share the same transmission window as DWDM, but it definitely allows 32 carriers. Who needs optical amplification anyway?
CA
Carin
2 years ago
Definitely, C and D are the right choices. CWDM is efficient in allowing multiple carriers without the need for optical amplification.
LU
Lucille
2 years ago
I think you're right. CWDM shares the same transmission window as DWDM, but it does allow for multiple carriers.
BE
Beatriz
2 years ago
Yeah, optical amplification is not needed for CWDM. It's great that passive CWDM devices require no electrical power.
DO
Dominga
2 years ago
I agree, C and D are the correct choices. CWDM can definitely multiplex up to 32 carriers.
MA
Malcolm
2 years ago
C and E are the correct answers. CWDM allows up to 32 optical carriers on a single fiber, and passive CWDM devices don't need electrical power. The other options are incorrect.
CH
Chanel
2 years ago
Yes, E is also true. Passive CWDM devices don't need electrical power.
SO
Sol
2 years ago
I think C is correct, CWDM allows multiple optical carriers on a single fiber.
SC
Scarlet
2 years ago
I'm not sure about B, though. I think it uses different bands for CWDM.
SH
Sherita
2 years ago
I agree with you, Ashleigh. I also think E is true because passive CWDM devices don't need power.
AS
Ashleigh
2 years ago
I think C is true because CWDM allows multiple optical channels on one fiber.