the Cisco 642-321 test training
We all know that study 642-321 exam is a popular exam Cisco certification exam can be a very good market acceptance. Meanwhile, the 642-321 pdf is a relatively difficult test, because it includes a lot of problems, how to quickly grasp all the knowledge it has always been a difficult point.
642-321 on the market there are many resource materials, but the content too much, to complete all learning may take a long time.
Is there any way to completion of a week to 642-321 ?
1.Which timing mode is most appropriate for an ONS 15454 that has lost its BITS-1 and optical references?
A.line timing
B.loop timing
C.internal timing
D.through timing
E.external timing
Correct:C
2.With R4.0, how many total DCC-R tunnel connections can each ONS 15454 support using the TCC+ card?
A.10
B.32
C.64
D.84
E.96
Correct:B
3.What is the difference between 1+1 and 1:1 protection switching?
A.1+1 is based on APS, while 1:1 is based on IPS.
B.1:1 is used in SNCP switching, while 1+1 is used in MS-SPRing switching.
C.1+1 sends signals on Working and Protect paths, while 1:1 sends signals only on Working path.
D.1+1 sends signals on Working path ONLY, while 1:1 sends signals on both Working and Protect paths.
Correct:C