Practice Test Geeks(010-160) LPI Linux Essentials Practice Test
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010-160 - LPI Linux Essentials Networking Basics Questions and Answers Flashcards

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  1. Which command shows the routing table on a Linux system using the modern iproute2 suite?

    Answer: ip route

    The `ip route` command displays the kernel routing table, showing how packets are directed to their destinations on modern Linux systems.

  2. What port number is used by the SSH (Secure Shell) protocol by default?

    Answer: 22

    SSH uses TCP port 22 by default to provide encrypted remote login and command execution over a network.

  3. Which command traces the network path (hops) that packets take to reach a destination host?

    Answer: traceroute

    The `traceroute` command sends packets with increasing TTL values to discover each router (hop) along the path to a destination host.

  4. What does the command `ss -tuln` display on a Linux system?

    Answer: Listening TCP and UDP ports without resolving names

    The `ss -tuln` command lists all listening TCP (-t) and UDP (-u) sockets with numeric addresses (-n) without resolving hostnames (-l for listening).

  5. Which command on Linux is used to securely copy files between a local machine and a remote host over SSH?

    Answer: scp

    The `scp` (secure copy) command uses the SSH protocol to encrypt and transfer files between local and remote systems.

  6. What is the purpose of the `/etc/hostname` file on a Linux system?

    Answer: It stores the system's hostname

    The `/etc/hostname` file contains the hostname of the local Linux system, which is read at boot to set the machine's identity on the network.