200-901 Question 178
Select 3A network engineer is configuring a small network with the subnet 192.168.1.0/24. The goal is to ensure that devices in the subnet can communicate with each other and access the internet via a router with the IP 192.168.1.1. Which of the following are necessary components to configure on a device within this subnet to achieve connectivity?
- A
An IP address within the range 192.168.1.1 to 192.168.1.254
- B
A subnet mask of 255.255.255.0
- C
A default gateway of 192.168.1.1
- D
A static route to 0.0.0.0/0 pointing to 192.168.1.1
- E
A DNS server IP address of 192.168.1.1
Show answer and explanation
Correct answers: A, B, C
Explanation
To enable proper connectivity in the network, each device must have an IP address within the subnet range, the correct subnet mask, and the default gateway configured to route traffic outside the subnet. Static routes to 0.0.0.0/0 are managed at the router level, and DNS configuration is not required for basic connectivity.
- A. Correct.
An IP address within the range is required for the device to communicate on the network. Since the subnet is 192.168.1.0/24, valid host IPs are from 192.168.1.1 to 192.168.1.254.
- B. Correct.
The subnet mask determines the network and host portions of an IP address. For a /24 network, the subnet mask must be 255.255.255.0.
- C. Correct.
A default gateway is necessary for communication outside of the local subnet. In this scenario, the router at 192.168.1.1 serves as the default gateway.
- D. Incorrect.
A static route to 0.0.0.0/0 is typically configured on the router, not end devices. End devices use their default gateway for external communication.
- E. Incorrect.
While a DNS server is important for resolving domain names, it is not strictly required for basic IP connectivity within a subnet or to access the internet by IP.