单选题What is the purpose of a network mask?（）AIt is used to identify the maximum hop count of a subnetwork.BIt is used to identify an IP address as either private or public.CIt is used to identify the network to which an IP address belongs.DIt is used to identify the total number of bits present in an IP address.
单选题
What is the purpose of a network mask?（）
A
It is used to identify the maximum hop count of a subnetwork.
B
It is used to identify an IP address as either private or public.
C
It is used to identify the network to which an IP address belongs.
D
It is used to identify the total number of bits present in an IP address.
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多选题Which two statements are true of a network mask?（）AA subnet mask specifies the portion of an IP address that is in a binary format.BA subnet mask specifies the portion of an IP address that is in a decimal format.CA subnet mask specifies the portion of an IP address that represents a network prefix.DA subnet mask specifies the portion of an IP address that represents network hosts.
单选题What is the purpose of a network mask?（）AIt is used to identify the maximum hop count of a subnetworkBIt is used to identify an IP address as either private or publicCIt is used to identify the network to which an IP address belongsDIt is used to identify the total number of bits present in an IP address
单选题What is the purpose of a network mask?（）AIt is used in conjunction with the wildcard mask to determine the number of hosts on a networkBIt is used to define which parts of the IP address are allocated to host addresses and network prefixesCIt is used to hide subnets from external networks by masking the subnets with NATDIt is used to differentiate a network as a classful network or a classless network
单选题What is the purpose of a network mask?（）AIt is used to identify the maximum hop count of a subnetwork.BIt is used to identify an IP address as either private or public.CIt is used to identify the network to which an IP address belongs.DIt is used to identify the total number of bits present in an IP address.
单选题The router address 192.168.1.250 is the default gateway for both the Web Server 2 and Host 1. What is the correct subnet mask for this network?（）A255.255.255.0B255.255.255.192C255.255.255.250D255.255.255.252