Mis-routed packets
Excess jitter
Delay of critical traffic
Packet loss due to congestion
Data link layer broadcast storms
FTP connections unsuccessful
第1题：
Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises ease network management and decreases(66)by converging a company's telephony and data infrastructures into one network. And a VOIP solution implemented at a company's head-quarters with far-reaching branch offices can(67)tremendous amounts of money in long distance phone bills, provided that solution delivers POTS-like voice(68)over the Internet.
VOIP gateways are designed to convert voice from the(69)domain to the circuit switched domain. VOIP solutions use a digital signal processor(DSP)to process the voice data, preparing the voice sample for transmission by compressing voice and removing jitter. The VOIP equipment must comply with the(70)H.323 standard defined by the International Telecommunication Union, or ITU.
A．time
B．cash
C．costs
D．space
第2题：
You have a computer that runs Windows Vista. You create a virtual private network (VPN) connection between the computer and your company’s network.You notice that while the computer is connected through the VPN connection, users on the company network can access shared folders on the computer.You need to prevent network users from accessing your shared folders when you are connected to the company’s network by using the VPN connection.What should you do?（）
A.A
B.B
C.C
D.D
第3题：
●Network managers have long awaited practical voice-overIP(VOIP)solutions.VOIP promises(71)network management and decreases costs by(72)a company's telephony and data infrastructures into one network.And a VOIP solution implemented at a company's head-quarters with far-reaching branch offices can(73)tremendous amounts of(74)in long distance phone bills，provided that solution delivers POTS-like voice(75)over the Internet.
(71)A.complicated B.useful C.ease D.orderly
(72)A.converging B.dividing C.combine D.bringing
(73)A.get B.put C.save D.waste
(74)A.cash B.money C.space D.time
(75)A.qualtity B.quality C.volune D.speed
第4题：
Jitter is causing problems with the VOIP application in the Company network. What causes network jitter？（）
第5题：
VOIP is being implemented on the Company network. In a properly designed network， what is the maximum amount of time a voice package should spend crossing a network？ （）
第6题：
Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises(71)network management and decreases costs by(72)a company's telephony and data infrastructures into one network. And a VOIP solution implemented at a company' s head -quarters with far -reaching branch offices can(73)tremendous amounts of(74)in long distance phone bills, provided that solution delivers POTS -like voice(75)over the Internet.
A．complicated
B．useful
C．ease
D．orderly
第7题：
You work as a network Exchange administrator at Company.com.The Company.com network currently consists of an internal network and perimeter network.The Company.com organization makes use of Microsoft Exchange Server 2010 as their messaging solution.Company.com has recently deployed a new server to the perimeter network which runs Microsoft Windows Server 2008 R2.During the course of the business week you receive instruction from Company.com to install the Microsoft Exchange Server Edge Transport server role on the server in the perimeter network. What should you do？（）
第8题：
Network managers have long(140)practical voice-over-IP(VOIP)solutions. VOIP(141)ease network management and decreases costs by converging a company's telephony and data infrastructures into one network. And a VOIP solution implemented at a company's head-quarters with far-reaching branch offices can(142)tremendous amounts of(143)in long distance phone bills, provided that solution delivers POTS-like voice(144)over the Internet.
A．await
B．awaited
C．awaiting
D．awaits
第9题：
You need to troubleshoot some problems in the Company VOIP network associated with jitter. What is the cause of jitter？ （）
第10题：
VOIP is being implemented in the network and you need to assess the need for QoS. Which of thefollowing network problems would indicate a need to implement QoS features？（）