7/30/2019 cng chng 2

1/1

Chng 2I: Hiu: 10 cu

1. Tn gi ca chuyn mch no di y khng chnh xcB. C.mch tin tc

2. P.thc di y khng phi l 1 p.thc chuyn mch knhD. chuyn mch ATM

3. B nh T-MEM dng ghi nhD. t m PCM

4. Trong c.mch s, tn hiu u vo b chuyn mch phi l tn hiu

D. Tn hiu s dng PCM5. n v x l thng tin dng trong c.mch s lB. TimeSlot

6. C.mch no thc hin chc nng truyn m t PCM ca knh trn tuyn PCM u vono ti knh c cng th t vi n trn mt trong cc tuyn PCM u ra ca b cmach

C. chuyn mch thi gian s7. B nh S-MEM trong c.mch thi gian KTS c chc nng c bn

B. Nh tm thi cc tn hiu PCM cha trong mi khe tgian pha u vo ta tr thch hp theo yu cu.8. Trong cc tng i s dung lng cc ln ngi ta s dng cu trc ghp tng no

C. T-S-T

9. Tin trnh ca 1 cuc gi xem nh tri qua my bc;C. 10 bc10. Ni dung bo hiu c phn loi theo chc nng th c my loi.

B. 3 loiII. Hiu: 10 cu

1. c im no di y khng phi l chuyn mch knh:D. p dng cc bin php pht hin v sa li

2. Loi thu bao hay u cui no khng kt ni trn 1 tng i.D. g dy cp in cho cc thit b u cui.

3. Trong s nguyn tc hot ng ca b c.mch t.gian KTS, iu khin c hayghi b nh S-MEM ngi ta s dng :

A. Selector 14. B c.mch t.gian KTS no c hiu sut s dng cc ngn nh ca S-MEM cao nht.A. Kiu ghi ngu nhin v c ngu nhin.

5. Trong b c.mch t.gian KTS, kiu ghi ngu nhin v c ngu nhin:B. S ngn nh ca C-MEM ln hn s ngn nh ca S-MEM

6. Trong b c.mch k.gian s iu khin theo u ra th b nh C-MEM cB. mi ct c s ngn nh = vi dung lng ca tuyn PCM

7. c c b c.mch k.gian KTS iu khin theo hng, ngi ta s dngA. cc b hp knh ti mi ct

8. c c b c.mch k. gian KTS iu khin theo ct, ngi ta s dng:D. Cc b phn knh ti mi hng.

9. Vic ghp knh m rng trong KT c.mch k.gian KTS c thc hin lm tng dunglng ca h thng hay:C. Lm tng tc chuyn mch.

10. Vic ghp tng c.mch s c thc hin do:C. Nhu cu khng cao dung lng h thng v do s hn ch ca cng ngh chto vi mch.