WGU Network and Security - Foundations - C172 (Network Commands) 2024 Study Guide

Traceroute - Used to determine the number of hops required for a packet to reach its destination. Nslookup - Used to determine IP address of a domain name. Ping - Used to determine the IP address and latency in networks. Netstat -a - Used to display IP ports currently open on the Windows OS. Whois - Information about a webserver including contact information. ARP - This command displays the IP to physical (MAC) address mappings for hosts that have been discovered in the ______ cache. ______ can be used to add, remove, or modify entries in the ______ cache. The hosts need to be on the local network, as these addresses are discovered by broadcasting to everyone on the network and noting the reply from the owner; broadcast traffic is not allowed through a router so that the system will maintain the MAC address of the router. Nmap - This command scans networks to see what it can find in terms of hosts and open ports (including well- known ones for many applications). It is commonly used to determine what is deployed on a network for vulnerability analysis, security scans, and related activities. ipconfig - Provides the user with the IP, subnet mask, and default gateway for each network adapter by default with the /all option information, such as MAC address, DHCP status, and lease information. The command with the /release option can be used to release all connections and renew all adapters. It is primarily used in Windows. ifconfig - Similar to ipconfig, this command is used to configure the kernel network interfaces. It is implemented at the time of booting to configure the necessary interfaces. Once the interfaces are configured, it is used for debugging or tuning the system. It is primarily used in Linux. dig - A command used to query the DNS name servers. It is helpful in troubleshooting DNS problems. It is also used for lookups and will display answers from the query. It is a replacement for nslookup.