With Internet Group Management Protocol (IGMP) snooping, Layer 2 devices also can make intelligent multicast forwarding decisions by examining the contents of each frameâs Layer 3 IP header. Consider the example of a heterogeneous Layer 2 and Layer 3 network that does not use IGMP snooping.ith Internet Group Management Protocol (IGMP) snooping, Layer 2 devices also can make intelligent multicast forwarding decisions by examining the contents of each frameâs Layer 3 IP header. Consider the example of a heterogeneous Layer 2 and Layer 3 network that does not use IGMP snooping.
â¢ Volatile substances have a tendency to vaporize whereas nonvolatile substances do not have a tendency to vaporize. â¢ Volatile substances have a high vapor pressure at normal room temperature and pressure. Nonvolatile substances do not have a high vapor pressure in these conditions.
A material that conducts little or no electricity, heat, or sound. nonconductor (ËnÉnkÉnËdÊktÉ) n (General Physics) a substance that is a poor conductor of heat, electricity, or sound. nonâ¢conâ¢ducâ¢tor (ËnÉn kÉnËdÊk tÉr) n. a substance that does not readily conduct heat, sound, or electricity.