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Questions and Answers
What is the purpose of the ip link subcommand?
What is the purpose of the ip link subcommand?
What is the default subcommand for configuring an interface with IPv6 using ip?
What is the default subcommand for configuring an interface with IPv6 using ip?
What is the purpose of the ifconfig -a option?
What is the purpose of the ifconfig -a option?
What is the command to list the contents of the /sys/class/net directory?
What is the command to list the contents of the /sys/class/net directory?
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What is the default subcommand for configuring an interface with IPv4 using ifconfig?
What is the default subcommand for configuring an interface with IPv4 using ifconfig?
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Study Notes
Network Troubleshooting Tools
- Hex viewers and protocol analyzers can be used to view packets in more detail than a packet sniffer.
The ip Command
- The ip command is a utility used to view and configure network configurations.
- Each subcommand of ip has its own man page.
- The SEE ALSO section of the ip man page lists available subcommands.
Internet Control Message Protocol (ICMP)
- ICMP is a network layer protocol in the TCP/IP stack.
- ICMP is used for traffic volume control, detection of unreachable destinations, route redirection, and checking the status of remote hosts.
- ICMP is used by the ping command.
IPv6
- IPv6 is the new version of the IP protocol, with a 128-bit address divided into 8 groups of 16 bits.
- IPv6 addresses can be abbreviated by reducing strings of 0000 to 0 and omitting strings with a value of 0.
- IPv6 addresses can be shortened, but this can only be done once in the address.
Configuring Network Interfaces
- The ip command can be used to configure network interfaces.
- The link subcommand for ip lists the interface links available for configuration.
- The ip addr subcommand is used to view and configure IP addresses.
- The ifconfig command can also be used to configure network interfaces, but it requires root privilege.
Listing Network Interfaces
- The ip link command lists the interface links available for configuration.
- The /sys/class/net directory can also be used to list network interfaces.
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Description
This quiz covers the use of tools such as hex viewers and protocol analyzers to analyze network packets, and the ip command for configuring network settings.
