Which two Internet Protocol (IP) telephony devices are best categorized as infrastructure components? （）A、IP telephonesB、Voice gatewaysC、Call management softwareD、Media Convergence Servers (MCSs)

题目

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

A、IP telephones
B、Voice gateways
C、Call management software
D、Media Convergence Servers (MCSs)

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相似问题和答案

第1题：

Which two packet attributes contribute to the identification of a session? ()(Choose two.)

A. destination port

B. TTL

C. IP options

D. protocol number

参考答案：A, D

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

参考答案：B, C

第3题：

TCP／IP protocol is the Internet protocol.()

此题为判断题(对，错)。

参考答案：对

第4题：

Simple Network Management Protocol (SNMP) is an Internet Standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device（）. SNMP is a component of the Internet Protocol Suiteas defined by the Internet（）Task Force. SNMP operates in the（）layer of the Internet protocol suite. All SNMP messages are transported via User（请作答此空）Protocol. An SNMP-managed network consists of three key components: a) Managed devices, b) （）(i.e.，software which runs on managed devices), and c) Network management station (NMS) (i.e.， software which runs on the manager).

A.Datum
B.Datagram
C.DatA.Packet
D.DatA.Message

答案：B

解析：

简单英语阅读题。

第5题：

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

正确答案：D

第6题：

Which two statements are true about AH?() (Choose two.)

A. AH provides data integrity.

B. AH is identified by IP protocol 50.

C. AH is identified by IP protocol 51.

D. AH cannot work in conjunction with ESP

参考答案：A, C

第7题：

Open Shortes t Path First (OSPF) is a routing protocol developed for Internet Protocol (IP) networks by the Interior Gateway Protocol (IGP) working group of the Internet Engineering Task Force (IETF).Which two statements best describe the OSPF link - state routing pro tocol?（）

A. OSPF sends updates every 10 seconds

B. OSPF sends triggered updates when a network change occurs

C. When a link state is changed, the router that detected the change creates a link - state advertisement (LSA) and propagates it to all OSPF devices using the 224.0.0.6 multicast address

D. OSPF sends summaries of individual link- state entries every 30 minutes to ensure LSDB synchronization

参考答案：B, D

第8题：

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

正确答案：D
TCP/IP通信协议，它提供了许多不同的网络服务。TCP/IP网络协议是从两个标准的形成：TCP（传输控制协议）和IP（互联网协议）。（72）意味着它是在传输层。A.ISOB.IPC.OSID.TCP

第9题：

The Internet is based on connectionless end-to-end packet service, which traditionally provided best-effort means of data （请作答此空）using the Transmission Control Protocol/Internet Protocol Suite. Although the （）design gives the Internet its flexibility and robustness, its packet dynamics also make it prone to congestion problems,especially at （）that connect networks of widely different bandwidths.The initial QoS function set was for internet hosts.One major problem with expensive wide-area（）links is the excessive overhead due to small Transmission Control Protocol packets created by applications such as telnet and rlogin. The Nagle （），which solves this issue,is now supported by all IP host implementations.

A.transformation
B.transportation
C.processing
D.progressing

答案：B

解析：

平时多积累专业词汇。

第10题：

IPsec, also known as the internet Protocol ( ) , defines the architecture for security services for IP network traffic IPsec describes the framework for providing security a the IP layer, as well as the suite of protocols designed to provide that security: through_ ( )_ and encryption of IP network packets. IPec can be used 10 protect network data, for example, by setting up circuits using IPsec ( ), in which all data being sent between two endpoints is encrypted, as with a Virtual (请作答此空) Network connection ;for encrypting application layer data ;and for providing security for routers sending routing data across the public internet. Internet traffic can also be secured from host to host without the use of IPsec, for example by encryption at the ( ) layer with HTTP Secure (TTPS)or an the transport layer wit the Transport Layer Security (TLS)protocol.

A.pubic]
B.private]
C.personal
D.proper

答案：B

解析：

Which two Internet Protocol (IP)

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