010-160 010-160 - LPI Linux Essentials Networking Basics Questions and Answers

Question 1

Which command displays the IP address and network interface configuration on a Linux system?

Accepted Answer

ip addr

Answer

The `ip addr` command (from the iproute2 suite) shows all network interfaces and their assigned IP addresses on modern Linux systems.

Question 2

What command is used to test basic network connectivity by sending ICMP echo requests to a host?

Accepted Answer

ping

Answer

The `ping` command sends ICMP echo request packets to a target host and reports whether responses are received, testing basic network reachability.

Question 3

Which file on a Linux system maps hostnames to IP addresses locally without using DNS?

Accepted Answer

/etc/hosts

Answer

The `/etc/hosts` file provides static hostname-to-IP mappings that are checked before DNS queries, allowing local name resolution overrides.

Question 4

What does the acronym DHCP stand for in Linux networking?

Accepted Answer

Dynamic Host Configuration Protocol

Answer

DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet masks, gateways, and DNS servers to network clients.

Question 5

Which file specifies the DNS nameserver(s) that a Linux system should use for hostname resolution?

Accepted Answer

/etc/resolv.conf

Answer

The `/etc/resolv.conf` file contains the IP addresses of DNS nameservers (prefixed with `nameserver`) that the system consults for DNS lookups.

(010-160) LPI Linux Essentials Practice Test