A SOHO user cannot connect to the internet. Their configuration shows: IP: 192.168.223.15 Mask: 255.255.255.0 Gateway: 192.168.233.1 DNS: 8.8.8.8, 4.2.2.1, 4.2.2.2 Baseline documentation shows valid…

The correct answer is E. Gateway. The baseline documentation says the valid network range ends at 192.168.232.255, but the user's gateway is 192.168.233.1, which is outside the permitted network range. CompTIA A+ emphasizes that devices must have a gateway inside their own subnet. Given a mask of 255.255.255.0…

Submitted by krish.m· Mar 30, 2026Networking

Question

A SOHO user cannot connect to the internet. Their configuration shows:

IP: 192.168.223.15 Mask: 255.255.255.0 Gateway: 192.168.233.1 DNS: 8.8.8.8, 4.2.2.1, 4.2.2.2 Baseline documentation shows valid subnet range: 192.168.200.0-192.168.232.255. Which setting must be changed?

Options

ATertiary DNS
BSecondary DNS
CPrimary DNS
DIP Address
EGateway
FSubnet mask

How the community answered

(18 responses)

B
22% (4)
C
11% (2)
D
6% (1)
E
56% (10)
F
6% (1)

Explanation

The baseline documentation says the valid network range ends at 192.168.232.255, but the user's gateway is 192.168.233.1, which is outside the permitted network range. CompTIA A+ emphasizes that devices must have a gateway inside their own subnet. Given a mask of 255.255.255.0, the user's subnet is 192.168.223.x, so the gateway must be in 192.168.223.x, not 192.168.233.x. DNS settings are public and acceptable. The IP address and subnet mask are valid within the documented address space. Therefore, the incorrect setting is the gateway, which prevents external routing. Correcting it resolves the connection issue, matching CompTIA's routing and TCP/IP troubleshooting

Topics

#IP addressing#Default gateway#Subnetting#Network troubleshooting

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