Gudangnya materi pendidikan dan berbagai soal ujian
Exam : 642-444
Title : IP Telephony Exam
Ver : 02.13.07
2 Example Questions out of 448 Questions:
QUESTION 1:
What is required for the Barge feature to work?
A. a conference bridge
B. a shared line
C. a conference already in process
D. a multiple line appearence
Answer: B
Barge and Privacy
The Barge and Privacy features work with each other. Both features work with only shared lines.
http://www.cisco.com/en/US/partner/products/sw/voicesw/ps556/products_administration_guide_chapter09186
Exam : 642-311
Title : Cisco Optical SONET Exam
Ver : 02.14.07
2 Example Questions out of 60 Questions:
QUESTION 13:
Scrambling of SONET signals is done to _____.
A. prevent the leakage of external fiber emissions
B. provide the optical network with the highest level of security possible
C. assure an even distribution of 1′s and 0′s for extended transmitter life
D. assure an adequate number of transitions for clock recovery at the receiver
E. prevent the receiver from assuming AIS inadvertently when all 0′s are received
Answer: D
