LFCE Knowledge Checks

Question 1

What will the ping -c3 system.example.com command test? Select all answers that apply.

A. DNS resolution
B. Default gateway
C. End-to-end connectivity
D. The status of the network port

4 Network Troubleshooting and Monitoring

Answer 1

A. DNS resolution

C. End-to-end connectivity

Question 2

Client systems normally use a firewall to restrict outbound connections. True or False?

4 Network Troubleshooting and Monitoring

Answer 2

False - I Guess the answer is IPTABLES

Question 3

Which of the following can be determined by the nmap program?

A. Outbound ports are available on the local system
B. Inbound ports are opened on the remote system
C. Outbound ports are in use on the local system
D. Inbound ports are active on the remote system

4 Network Troubleshooting and Monitoring

Answer 3

B. Inbound ports are opened on the remote system

Question 4

“Well-known” network ports may be manipulated by a regular user. True or False?

2 Linux Networking

Answer 4

False

Question 5

The device that connects two different Layer 3 domains is commonly called a _________.

A. Switch
B. Router
C. V-LAN
D. SAN

2 Linux Networking

Answer 5

B. Router

Question 6

What is the name of the most common system initialization subsystem?

A. SysVinit
B. Upstart
C. Systemd
D. rc.local

2 Linux Networking

Answer 6

C. Systemd

Question 7

The xinetd service is utilized for frequently used services. True or False?

2 Linux Networking

Answer 7

False

Question 8

What tool(s) will alter the Layer 3 configuration of a network adapter? Select all answers that apply.

A. ifconfig
B. ip
C. ethtool
D. setparm

3 Network Configuration

Answer 8

A. ifconfig

B. ip

Question 9

Network Manager is common to most Linux distributions. True or False?

3 Network Configuration

Answer 9

True

Question 10

In which of the following locations do all Linux distributions have the static network configuration files?

A. /etc/sysconfig/network/
B. /etc/sysconfig/network-scripts/
C. /etc/network
D. /etc/NetworkManager/interfaces
E. None of the above

3 Network Configuration

Answer 10

E. None of the above

Question 11

Network Manager has which of the following interfaces? Select all answers that apply.

A. Graphical User Interface
B. Text User Interface
C. Command Line Interface
D. None of the above

3 Network Configuration

Answer 11

A. Graphical User Interface
B. Text User Interface
C. Command Line Interface