单项选择题X 纠错
Typically，an IP address refers to an individual host on aparticular network.IP also accommodates addresses that refer to a group of hosts on one or more networks.Such addresses are referred to as multicast addresses，and the act of sending a packet from a source to the members of a（1）group is referred to as multicasting. Multicasting done（2）the scope of a single LAN segment is straightforward. IEEE 802 and other LAN protocols include provision for MAC-level multicast addresses. A packet with a multicast address is transmitted on a LAN Segment. Those stations that are members of the（3）multicast group recognize the multicast addressand（4）the packet. In this case，only a single copy of the packet is ever transmitted. This technique works because of the（5）nature of a LAN：A transmission from any one station is received by all othe rstation on the LAN.
A.within
B.out of
C.beyond
D.cover
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单项选择题
Typically，an IP address refers to an individual host on aparticular network.IP also accommodates addresses that refer to a group of hosts on one or more networks.Such addresses are referred to as multicast addresses，and the act of sending a packet from a source to the members of a（1）group is referred to as multicasting. Multicasting done（2）the scope of a single LAN segment is straightforward. IEEE 802 and other LAN protocols include provision for MAC-level multicast addresses. A packet with a multicast address is transmitted on a LAN Segment. Those stations that are members of the（3）multicast group recognize the multicast addressand（4）the packet. In this case，only a single copy of the packet is ever transmitted. This technique works because of the（5）nature of a LAN：A transmission from any one station is received by all othe rstation on the LAN.
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单项选择题
任何一个团队从开始组建到最终达到绩效要求，需要一个周期。依据塔克曼群体发展模型，结合IT服务管理工作特性，将团队建设周期分为四个阶段，他们分别是（未按正确次序排列） ①风暴期 ②表现期 ③组建期 ④规范期团队建设周期的正确排序为（）
