A user's workstation is assigned the static IP address 10.0.4.50 with a subnet mask of 255… — CompTIA Network+

A user's workstation is assigned the static IP address $10.0.4.50$ with a subnet mask of $255.255.255.0$ . The workstation can successfully ping other local computers on the $10.0.4.0/24$ network, but it cannot reach any servers on external subnets or the internet. An administrator reviews the network configuration and notes that the default gateway is set to $10.0.5.1$ . Which of the following is the root cause of the outbound connectivity issue?

The default gateway is configured on a different IP subnet than the host.Cevap
B
An implicit deny rule at the end of an Access Control List is blocking outbound traffic.
C
The host requires a VLAN trunking connection to communicate across different broadcast domains.
D
The assigned default gateway address conflicts with the standard transport layer port assigned to IP routing.

Cevap

The default gateway is configured on a different IP subnet than the host.

For a host to communicate with remote networks, its default gateway must reside on the exact same local IP subnet. Here, the host is on

10.0.4.0/24

, but the gateway is set to

10.0.5.1

(which is on

10.0.5.0/24

). Consequently, the host cannot deliver traffic to the gateway for routing to external subnets.

Adım Adım Çözüm

Analyze the host IP address and subnet mask.

The host address is

10.0.4.50

with subnet mask

255.255.255.0

(/24), defining a usable local subnet of

10.0.4.1

through

10.0.4.254

Devices on a network can directly communicate only with other devices on their local IP subnet.

Compare the configured default gateway address to the local subnet.

The default gateway address

10.0.5.1

belongs to the

10.0.5.0/24

subnet.

A host must send traffic destined for external networks to a gateway on its own local subnet. Because

10.0.5.1

is outside

10.0.4.0/24

, the host cannot resolve its MAC address locally to deliver outbound packets.

Anahtar Kavram

Default Gateway Subnet Matching

Soru

Cevap

Adım Adım Çözüm

Anahtar Kavram

Sık Yapılan Hatalar

Konular

Bu konudan daha fazla soru