1.4 Network Configuration and Verification on Different Operating Systems
1.4.1 Windows Network Configuration
Open Network and Sharing Center, select the interface, and view its details.
The command most commonly used by technicians is ipconfig.
Use ipconfig /all to display additional details.
Note:ipconfig /all displays information such as the host name, primary DNS suffix, node type, and interface configuration.
shell snippet
1C:\Users\PC-A> ipconfig /all
2Windows IP Configuration
3 Host Name . . . . . . . . . . . . : PC-A-00H20
4 Primary Dns Suffix . . . . . . . : cisco.com
5 Node Type . . . . . . . . . . . . : Hybrid
6 IP Routing Enabled. . . . . . . . : No
7 WINS Proxy Enabled. . . . . . . . : No
8 DNS Suffix Search List. . . . . . : cisco.com
1.4.2 Verify Connectivity on Windows
ping tests Layer 3 connectivity.
tracert identifies the routing hops taken by packets.
Important: Some firewalls, including Windows Firewall, block ping traffic by default.
1.4.3 Linux Network Configuration
The graphical interface varies according to the Linux distribution.
A traditional command is ifconfig.
A modern alternative is ip address or ip addr.
1.4.4 Verify Connectivity on Linux
Common commands include ping and traceroute.
Additional tools include:
speedtest, which measures available bandwidth.
ncat, which verifies connectivity to specific ports.
plaintext snippet
1ubuntu@ubuntu2004:~$ nc -z -v www.google.com 443
2Connection to www.google.com (142.250.138.105) 443 port [tcp/https] succeeded!
1.4.5 macOS Network Configuration
Graphical interface: System Settings > Network > Details.
Command: ifconfig.
Additional commands:
networksetup -listallnetworkservices.
networksetup -getinfo <network service>.
1.4.6 Verify Connectivity on macOS
Common commands include ping and traceroute.
System Information displays details such as supported Wi-Fi protocols.
Wireless Diagnostics provides Wi-Fi monitoring and troubleshooting tools.
1.4.7 Configure and Verify a Network on iOS
Open Settings > Wi-Fi and select the information icon for the connected network.
The page displays IPv4 and IPv6 addressing information, including the default gateway.
1.4.8 Configure and Verify a Network on Android
Open Settings > Connections or Network and Internet.
Verify that Wi-Fi is enabled, inspect available networks, and check signal strength.
More details may be available under Settings > About phone > Status.
Third-party applications can provide more detailed network analysis.
1.4.9 Lab — Verify an Address with a Subnet Calculator
1.4.10 Check Your Understanding — Endpoint Connectivity Troubleshooting
Question 1
Which two pieces of information can be verified by issuing ipconfig /all on a Windows computer? Choose two.
All IP addresses associated with a destination domain name.
The IP address assigned to the network adapter.
All TCP/IP sessions established with the local host.
The number of Layer 3 devices between the local host and a destination server.
The default gateway.
Note:ipconfig /all provides detailed network configuration information, including the adapter IP address and the default gateway.
Question 2
Which command can an administrator use to verify the IP configuration of interfaces on a Linux host?
arp -a
networksetup -getinfo
ifconfig
ipconfig /all
Note:ifconfig has traditionally been used on Linux to inspect and configure network interfaces. It displays IP addresses, subnet masks, and interface status.
Additional tip: On many modern Linux distributions, ip addr has replaced ifconfig as the preferred network configuration command.
