Linux+ Practice Quiz: XK0-004 Quiz 12

1. You want to allow any host from westsim.com to have access to your system. Which of the following line items would you add to the /etc/hosts.allow file to accomplish this task?

• ALL: .westsim.com
• ANY: .westsim.com
• ALLOW: .westsim.com
• ALLOW: .westsim.com = YES

2. You want to allow any host from westsim.com to have access to your system except a system called testsvr.westsim.com. Which of the following line items would you add to the /etc/hosts.allow file to accomplish this task?

• Reduces local virtual network traffic
• Replaces the need for a physical network switch
• Connects the VMs virtual NIC and the host's physical NIC
• Provides proxy and packet filtering

3. There are two types of hypervisors, Type 1 and Type 2. Which of the following describes those two types? (Choose TWO)

• A type 2 hypervisor runs on an operating system.
• A type 2 hypervisor is an operating system that runs the hypervisor as a dedicated system.
• A type 1 hypervisor is a software application that runs on top of a conventional operating system.
• A type 1 hypervisor runs on bare metal hardware and is referred to as a native hypervisor.

4. You want to allow any host from westsim.com to have access to your system except a system called testsvr.westsim.com. Which of the following line items would you add to the /etc/hosts.allow file to accomplish this task?

• ANY: .westsim.com EXCEPT testsvr.westsim.com
• ALLOW: .westsim.com, testsvr.westsim.com = NO
• ALL: .westsim.com EXCEPT testsvr.westsim.com
• ALLOW: .westsim.com ALL EXCEPT testsvr.westsim.com

5. You are asked to troubleshoot a problem on a user's computer. When the user types the name of any website he recives a message stating, "The page cannot be displayed." You determine that nothing has changed on the computer.

What is MOST LIKELY the problem?

• The web browser needs to be upgraded.
• The Apache server is down.
• The computer has a virus.
• The DNS server is down or not reachable.

6. Which network service would you use to get the IP address from the Fully Qualified Domain Name (FQDN) hostname?

• NAT
• DHCP
• DNS
• FTP

7. Maria, a user, is working remotely from a hotel while traveling for business. Maria needs to access some sales resources on the company's network.

Which of the following would allow Maria to securely access the resources she needs?

• VPN
• IP Header
• Telnet
• NAT

8. Carlos, a system administrator, needs to set up a VPN tunnel from a branch office to the main office. Data security is a high priority.

Which of the following will allow the IP packets to be encrypted and encapsulated in a new IP header that is sent through the VPN tunnel?

• NAT
• IPSec
• VNC
• DTLS

9. While writing a shell script, you want to perform some arithmetic operations. Which of the following commands is used to create an integer variable?

• set variablename
• declare -i variablename
• variablename(integer)
• variablename integer;

10. Which of the following commands deletes a variable?

• unset
• rm
• declare -r
• typeset -r