题目内容（请给出正确答案）

[主观题]

Which two Internet Protocol （IP) telephony devices are best categorized as infrastructurecomponents？（）

A. Call management software

B. Media Convergence Servers (MCSs)

C. Voice gateways

D. IP telephones

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更多“Which two Internet Protocol （I…”相关的问题

第1题

Which of the following describes a secure connection over the Internet between two sites？（）

A.FTP

B. VLAN

C. VPN

D. HTTP

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第2题

Which two Internet Protocol （IP) telephony devices are best categorized as infrastructure components？（）

A.Call management software

B.Media Convergence Servers (MCSs)

C.Voice gateways

D.IP telephones

点击查看答案

第3题

Which two are characteristics of the cost-containment business challenge？（）

A. reducing security breaches

B. using the Internet more

C. reducing upgrade charges

D. adopting new applications and services

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第4题

Which two of these Metro Internet services map to E-LAN services that are defined by the MEF？（）

A. Ethernet Private Line

B. Ethernet Wire Service

C. Ethernet Relay Service

D. Ethernet Multipoint Service

E. Ethernet Relay Multipoint Service

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第5题

Which of the following can be inferred from the first two paragraphs？A．The Internet has be

Which of the following can be inferred from the first two paragraphs？

A．The Internet has become inseparable in people"s lives.

B．The information gained online is not necessarily reliable.

C．The author is hunting for a well-paid job online.

D．The employers are not advised to get information about applicants online.

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第6题

TCP/IPisacommunicationprotocol,whichprovidesmanydifferentnetworkingservices.TheTCP/IPInter

TCP/IP is a communication protocol, which provides many different networking services. The TCP/IP Internet protocol suite is formed from two standards: the TCP （Transmission Control Protocol） and the IP（Internet Protocol）.

（72） means it is on the transport layer.

A.ISO

B.IP

C.OSI

D.TCP

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第7题

Ezonexam is migrating to a private IP addressing scheme. Which of the following describe t

he use of private IP addresses？ (Choose two)

A．Addresses chosen by Ezonexam.com to communicate with the Internet.

B．Addresses that cannot be routed through the public Internet.

C．Addresses that can be routed through the public Internet.

D．A scheme to conserve public addresses.

E．Addresses licensed to enterprise or ISPs by an Internet registry organization.

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第8题

Router R1 sits at an Enterprise branch office, using both the Internet and a leased line t

o another Enterprise router for its two connectivity options back into the rest of the Enterprise network. The engineer planning for this branch decided to use the leased line for all Enterprise traffic, unless it fails, in which case the Internet connection should be used to pass traffic to the Enterprise.Which of the following is most likely to be useful on the branch router？（）

A. IPsec tunnel

B. GRE tunnel

C. Floating stati c route

D. An IGP

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第9题

IPv6 is short for "Internet Protocol Version 6". IPv6 is the "next generation" protocol de

signed by the IETF to(71) the current version Internet Protocol, IP version 4("IPv4").

Most of today's internet uses IPv4, which is now more than twenty years old. IPv4 has been(72) resilient in spite of its age, but it is beginning to have problems. Most importantly, there is a growing(73) of IPv4 addresses, which are needed by all new machines added to the Internet. IPv6 fixes a number of problems in IPv4, such as the(74) number of available IPv4 addresses. It also adds many improvements to IPv4 in areas such as routing and network autoconfiguration. IPv6 is expected to gradually replace IPv4, with the two coexisting for a number of years during a transition(75) .

A．substitution

B．swap

C．switchover

D．replace

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第10题

Internet Protocol videoconferencing （IP/VC) provides which two business benefits？（）

A.Reduced travel time for instructors responsible for different geographic sites

B.Real-time discussions of patient information among remote medical teams

C.Improved morale and reduced turnover among employees who receive timely business updates

D.Increased sales and customer satisfaction due to current product information disseminated simultaneously to a global sales force by headquarters

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