LPI Updated 102-500 Exam Questions and Answers by cade

The commands that can be used to display the local routing table are netstat and route. Both commands can show the kernel routing tables, which contain information about the network destinations and the gateways to reach them. The netstat command can be used with the -r option to display the routing table, and the -n option to show numeric addresses only. The route command can also be used with the -n option to display the routing table without resolving names. However, both netstat and route are considered obsolete and have been replaced by the ip route command, which is the current recommended way of printing the routing table in Linux12. References:

1: Understanding Routing Table - nixCraft

2: How To Display Routing Table In Linux - RootUsers

3: linux networking - What is the local routing table used for? - Server Fault

The netstat utility is a command-line tool that displays network connections, routing tables, interface statistics, masquerade connections, and multicast memberships. It can be used with various options to filter and customize the output. However, it does not provide any information about broadcast services, which are a type of network communication that sends data to all devices on a network segment. Broadcast services are usually handled by other tools, such as ping, traceroute, or arp.

References:

netstat | Microsoft Learn

28 Netstat Commands {A Comprehensive List With Examples} - phoenixNAP

 The hostname command is used to set the hostname of the local system. The hostname command can take a single argument, which is the new hostname to be assigned to the system. For example, to set the hostname to linux, one can run:

hostname linux

The hostname command can also be used without any arguments to display the current hostname of the system. For example, to show the current hostname, one can run:

hostname

The hostname command only changes the hostname temporarily, meaning that the original hostname will be restored after a reboot. To change the hostname permanently, one has to edit the configuration files that store the hostname information, such as /etc/hostname, /etc/hosts, /etc/sysconfig/network, etc. The exact files and commands may vary depending on the Linux distribution and the system initialization process. For more details, please refer to the web search results1 or the question answering results2. References:

With IPv6, the interface identifier of an unicast address is typically a 64-bit value that is used to identify a host’s network interface. The interface identifier can be derived from the MAC address of the network card, or it can be randomly generated or manually configured. The interface identifier is the rightmost 64 bits of the most commonly encountered address types, such as global unicast (2000::/3) and link-local (fe80::/10). The interface identifier is different from the network prefix, which is the leftmost bits of the address that indicate the network or subnet to which the host belongs. The network prefix can vary in length, depending on the address type and the subnetting scheme. The network prefix and the interface identifier are separated by a double colon (::) in the IPv6 address notation. For example, in the address 2001:db8:1234:5678:abcd:ef12:3456:7890, the network prefix is 2001:db8:1234:5678 and the interface identifier is abcd:ef12:3456:7890. References: https://study-ccna.com/ipv6-interface-identifier/

https://networklessons.com/ipv6/ipv6-eui-64-explained