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.
nonÂ·eÂ·lecÂ·troÂ·lyte. A substance with molecules that do not, in solution, dissociate to ions and, therefore, do not carry an electric current. /nonÂ·elecÂ·troÂ·lyte/ (-e-lekÂ´tro-lÄ«t) a substance that does not dissociate into ions; in solution it is a nonconductor of electricity.