A network administrator is assigning static IP addresses to devices on a LAN segment alloc… — Cisco CCNA

A network administrator is assigning static IP addresses to devices on a LAN segment allocated the network subnet block $10.88.160.0/20$ . Which of the following IPv4 addresses are valid, usable host addresses within this subnet? (Select TWO.)

$10.88.160.1$ Cevap
$10.88.175.250$ Cevap
C
$10.88.175.255$
D
$10.88.176.1$

Cevap

The IPv4 addresses

10.88.160.1

and

10.88.175.250

are valid usable host addresses within the

10.88.160.0/20

subnet.

For the subnet

10.88.160.0/20

, the usable host address range is

10.88.160.1

through

10.88.175.254

. The IPv4 addresses

10.88.160.1

and

10.88.175.250

fall directly within this valid host range.

Adım Adım Çözüm

Determine the subnet mask and block size for the /20 prefix.

A /20 prefix translates to the dotted-decimal subnet mask

255.255.240.0

. In the third octet, the block size is calculated as

256 - 240 = 16

Calculating the block size defines the boundary of consecutive subnets.

Calculate the network address, broadcast address, and host range for

10.88.160.0/20

The subnet starts at Network ID

10.88.160.0

. The third octet ranges from 160 up to

160 + 16 - 1 = 175

. The Broadcast address is

10.88.175.255

. The usable host range spans from

10.88.160.1

through

10.88.175.254

Usable host addresses consist of all IP addresses strictly between the Network ID and Broadcast address.

Evaluate the given choices against the calculated host range.

The addresses

10.88.160.1

and

10.88.175.250

lie within

10.88.160.1 - 10.88.175.254

. The address

10.88.175.255

is the broadcast address, while

10.88.176.1

belongs to the next network segment (

10.88.176.0/20

Only addresses within the usable range can be assigned to host devices.

Anahtar Kavram

Determining usable host address ranges in IPv4 subnetting with CIDR notation.

Tahmini Süre:1m 30s

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