Questions

When would you use a 32 subnet mask?

When would you use a 32 subnet mask?

/32 mask is used only to designate a host, not network. I use them for loopbacks. /32 mask when applied to an interface defines only one address, which is useful for loopbacks because they don’t waste addresses. Additionally OSPF by default will advertise any loopbacks as a /32 regardless of the actual mask used.

How many hosts can the subnet 255.255 0.0 support?

Decimal Equivalent Mask Values

Subnets Hosts Mask
62 262,142 255.252.0.0
126 131,070 255.254.0.0
254 65,534 255.255.0.0
510 32,766 255.255.128.0

What is a 28 subnet mask?

/28 — 16 Subnets — 14 Hosts/Subnet. Network # IP Range. Broadcast. .0.

What subnet mask should be used on this network to allow only 30 usable host addresses?

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Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References

CIDR Subnet mask # of usable IP addresses
/31 255.255.255.254 2*
/30 255.255.255.252 2
/29 255.255.255.248 6
/28 255.255.255.240 14

What is 32bit IP address?

IPv4 addresses are 32-bit numbers that are typically displayed in dotted decimal notation. A 32-bit address contains two primary parts: the network prefix and the host number. All hosts within a single network share the same network address. Each host also has an address that uniquely identifies it.

Which subnet mask is best used for point to point networks?

Again, the /30 subnet mask provides the most efficient use of IP addresses by not wasting any IP addresses when it is applies to a point to point network connection.

What is the valid host range for the 255.255 255.248 subnet?

IPv6 Subnet Calculator

Prefix size Network mask Usable hosts per subnet
/27 255.255.255.224 30
/28 255.255.255.240 14
/29 255.255.255.248 6
/30 255.255.255.252 2
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How many usable hosts are there in a class A IPv4 network?

16,777,214
Table 2-1 IP Addresses Available to Internet Hosts

Address Class First Octet Range Number of Hosts Per Network
Class A 0 to 126 16,777,214
Class B 128 to 191 65,534
Class C 192 to 223 254

What is a 255.255 subnet?

The subnet mask 255.255. 255.0 address is the most common subnet mask used on computers connected to Internet Protocol (IPv4) networks. Besides its use on home network routers, you might also encounter this mask on network professional certification exams such as the CCNA.