Call management software
Media Convergence Servers (MCSs)
Voice gateways
IP telephones
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
点击查看答案
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
A global manufacturer of automobile parts wants to implement specialized voice applications to increase productivity and reduce the cost of overseas toll calls. Which Cisco solution best matches this business need?（）A、Digital subscriber line (DSL)B、Optical networkC、Wireless local-area network (WLAN)D、Internet Protocol (IP) telephony
Which Internet Protocol(IP) telephony element is best categorizedas a voice application component?（）A、IP telephoneB、Voice gatewayC、Private branch exchange (PBX)D、Advanced audio conferencing software
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 secondsB、OSPF sends triggered updates when a network change occursC、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 addressD、OSPF sends summaries of individual link- state entries every 30 minutes to ensure LSDB synchronization
A global manufacturer of automobile parts wants to implement specialized voice applications to increase productivity and reduce the cost of overseas toll calls. Which Cisco solution best matches this business need?（）A、Optical networkB、Digital subscriber line (DSL)C、Internet Protocol (IP) telephonyD、Wireless local-area network (WLAN)
Which two Internet Protocol (IP) telephony devices are best categorized as infrastructure components? （）A、Call management softwareB、Media Convergence Servers (MCSs)C、Voice gatewaysD、IP telephones
