What is the binary bit pattern of the first octet of a class C IPv4 address?

The binary bit pattern for the first octet of a class C IPv4 address is indeed represented as 110xxxxx. This indicates that the first three bits of the octet are fixed at '110', which designates the address as part of the class C range. Class C addresses are designed for smaller networks and can have up to 2,097,152 distinct networks, each capable of hosting 254 hosts.

In the context of IPv4 address classes, class C addresses fall within the range of 192.0.0.0 to 223.255.255.255. The first octet being 110 signifies that the address belongs to this category. The remaining five bits (represented by 'xxxxx') are used to define network and host addresses.

The other patterns provided do not correspond to class C addresses; for instance, 1110xxxx represents class D addresses, which are meant for multicast, while 1111xxxx is reserved for special use (such as broadcasts). The pattern 101xxxxx is indicative of class B addresses, which support a different range of networks and hosts. Thus, the specified binary pattern of 110xxxxx is essential for identifying class C IPv4 addresses accurately.