1.4 Troubleshoot Endpoint Connectivity

Question 1

ipconfig

Answer 1

to view the IP addressing information on a Windows host is to use the ipconfig Windows command

Question 2

ipconfig /all

Answer 2

The command ipconfig/all when issued on a Windows machine will display many IP configuration settings, such as, the IP address of all active network adapters, the subnetmask, the DNS server address, and the default gateway.

Question 3

ping

Answer 3

The ping command is an effective way to quickly test Layer 3 connectivity between a source and destination IP address. This command also displays various round-trip time statistics.

Question 4

traceroute (tracert -WINDOWS)

Answer 4

The traceroute or Windows tracert commands can help locate Layer 3 problem areas in a network. A trace returns a list of hops as a packet is routed through a network. It could be used to identify the point along the path where the problem can be found.

Some firewalls, such as Windows Firewall, will block pings by default. It is important this is part of your network documentation and be aware of these settings when testing and verifying network connectivity.

Question 5

ifconfig

Answer 5

use the ifconfig terminal windows command to display the status of the currently active interfaces and their IP configuration

Question 6

ip address

Answer 6

The Linux ip address command is used to display addresses and their properties. It can also be used to add or delete IP addresses.

Note: The output displayed may vary depending on the Linux distribution.

Question 7

speedtest

Answer 7

This is a tool that tests the bandwidth of your connectivity with your internet provider.

Question 8

ncat

Answer 8

Ncat is a networking utility which is part of the nmap suite of networking tools. Ncat or nc, has many uses including verifying connectivity to a device using a specific port.

Answer 9

Other useful macOS commands to verify the host IP settings include networksetup -listallnetworkservices and the networksetup -getinfo <network></network>

Answer 10

The ping and traceroute commands to verify network connectivity are also available on MacOS. Like Linux, MacOS is based on the UNIX operating system and therefore shares many of the same network connectivity commands including ncat and speedtest.

Additional network verification information can be obtained using the MacOS System Information tool as shown in the figure.

Answer 11

The MacOS Wireless Diagnostics application can be used to troubleshoot and monitor Wi-Fi connectivity. When selecting the option to monitor the network, the application will generate a diagnostics report.

Answer 12

Network connectivity on an Apple iOS device can be easily verified by attempting to reach a website or an online application.

You can also verify the IPv4 and IPv6 addressing information including the default gateway (router) on an Apple IOS device, as shown in the figure. To do so, go to Settings > Wi-Fi > Select the information icon (i) to the right of the active Wi-Fi network name (SSID).

Question 13

1.4.8 Setup and Verify Networking in Android

Question 14

1.4.8 Setup and Verify Networking in Android