102-500 : LPI Level 1 : Part 05

102-500 : LPI Level 1 : Part 05

1. What information related to a user account is modified using the chage command?

   • Default ownership for new files
   • Group membership
   • Set of commands available to the user
   • Password expiry information
   • Default permissions for new files

2. Which command is used to set restrictions on the size of a core file that is created for a user when a program crashes?

   • core
   • edquota
   • quota
   • ulimit
   • ktrace

3. How do shadow passwords improve the password security in comparison to standard no-shadow password?

   • Regular users do not have access to the password hashes of shadow passwords.
   • Every shadow password is valid for 45 days and must be changed afterwards.
   • The system’s host key is used to encrypt all shadow passwords.
   • Shadow passwords are always combined with a public key that has to match the user’s private key.
   • Shadow passwords are stored in plain text and can be checked for weak passwords.

4. After editing the TCP wrapper configuration to grant specific hosts access to a service, when do these changes become effective?

   • The new configuration becomes effective after restarting the respective service.
   • The new configuration becomes effective at the next system reboot.
   • The new configuration becomes effective when the last established connection to the service is closed.
   • The new configuration becomes effective after restarting the tcpd service.
   • The new configuration becomes effective immediately for all new connections.

5. What is true regarding public and private SSH keys? (Choose two.)

   • For each user account, there is exactly one key pair that can be used to log into that account.
   • The private key must never be revealed to anyone.
   • Several different public keys may be generated for the same private key.
   • To maintain the private key’s confidentiality, the SSH key pair must be created by its owner.
   • To allow remote logins, the user’s private key must be copied to the remote server.

6. Which of the following commands finds all files owned by root that have the SetUID bit set?

   • find / -user root -perm -4000

   • find / -user 0 -mode +s

   • find / -owner root -setuid

   • find / -owner 0 -permbits 0x100000000

   • find / --filter uid=1 --filter pers=u+s

7. FILL BLANK

   What command is used to add OpenSSH private keys to a running ssh-agent instance? (Specify the command name only without any path.)

   • ssh-add

8. FILL BLANK

   Which directory holds configuration files for xinetd services? (Specify the full path to the directory.)

   • /etc/xinetd.d/

9. Which mechanism does ssh use to interact with the SSH agent?

   • Connecting to port 2222 which is used by the system-wide SSH agent.
   • Using the fixed socket .ssh-agent/ipc.
   • Creating an alias replacing ssh with calls to ssh-agent.
   • Starting ssh-agent as a child process for each ssh invocation.
   • Evaluating environment variables such as SSH_AUTH_SOCK.

10. FILL BLANK

    Which parameter of the ssh command specifies the location of the private key used for login attempts? (Specify only the option name without any values or parameters.)

    • ssh-keygen

11. Which of the following is true about IPv6?

    • IPv6 no longer supports broadcast addresses.
    • With IPv6, the TCP port numbers of most services have changed.
    • IPv4 addresses can be used without any change with IPv6.
    • IPv6 no longer supports multicast addresses.
    • For IPv6, UDP and TCP have been replaced by the Rapid Transmission Protocol RTP.

12. What is true about the following command?

    nmcli device wifi connect WIFIoI

    • NetworkManager opens a new public hotspot with the SSID WIFIoI.
    • NetworkManager creates an unconfigured new virtual network interface named WIFIoI.
    • NetworkManager creates a new wifi connection WIFIoI and activates it.
    • NetworkManager returns an error in case the connection WIFIoI does not exist.
    • NetworkManager returns an error because WIFIoI is an invalid wifi device.

13. Which of the commands below might have produced the following output?

    

    • dig -t mx www.example.org
    • dig www.example.org
    • dig -t ns www.example.org
    • dig -t a www.example.org
    • dig -t soa www.example.org

14. FILL BLANK

    Which parameter is missing in the command

    ip link set ____ dev eth0

    to activate the previously inactive network interface eth0? (Specify the parameter only without any command, path or additional options.)

    • up

15. Which of the following states can NetworkManager show regarding the system’s network connectivity? (Choose two.)

    • up

    • portal

    • full

    • login-required

    • firewalled

16. Which of the following are valid host addresses for the subnet 203.0.113.64/28? (Choose two.)

    • 203.0.113.64
    • 203.0.113.78
    • 203.0.113.65
    • 203.0.113.80
    • 203.0.113.81

17. Which of the following keywords can be used in the file /etc/resolv/conf? (Choose two.)

    • substitute

    • lookup

    • search

    • nameserver

    • method

18. How does the ping command work by default?

    • Is sends an ICMP Echo Request to a remote host and waits to receive an ICMP Echo Response in return.
    • It sends an ARP request to a remote host and waits to receive an ARP response in return.
    • It sends a TCP SYN packet to a remote host and waits to receive an TCP ACK response in return.
    • Is sends a broadcast packet to all hosts on the net and waits to receive, among others, a response from the target system.
    • It sends a UDP packet to port 0 of the remote host and waits to receive a UDP error response in return.

19. Which of the following commands display the number of bytes transmitted and received via the eth0 network interface? (Choose two.)

    • route -v via eth0

    • ip stats show dev eth0

    • netstat -s -i eth0

    • ifconfig eth0

    • ip -s link show eth0

20. Given the following routing table:

    

    How would an outgoing packet to the destination 192.168.2.150 be handled?

    • It would be passed to the default router 192.168.178.1 on wlan0.
    • It would be directly transmitted on the device eth0.
    • It would be passed to the default router 255.255.255.0 on eth0.
    • It would be passed to the router 192.168.1.1 on eth0.
    • It would be directly transmitted on the device wlan0.