Question 1

What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?

Accepted Answer

The four layers of the TCP/IP stack (also called the DoD model) are Application/process, Host-to-Host, Internet, and Network Access. The Host-to-Host layer is equivalent to the Transport layer of the OSI model.

Question 2

Which of the following is an industry-wide standards suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer3 Network layer of the OSI model?

Accepted Answer

IPSec is an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer3 Network layer of the OSI model.

Question 3

By default , what type of trust are all Windows 2000 trust relationships within a domain tree or forest?

Accepted Answer

By default, all Windows 2000 trusts within a domain tree or forest are transitive trusts.

Question 4

What is the purpose of flow control?

Accepted Answer

Flow control allows the receiving device to control the transmitter so the receiving device's buffer does not overflow.

Question 5

You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?

Accepted Answer

Dynamic Host Configuration Protocol (DHCP) is used to provide IP information to hosts on your network. DHCP can provide a lot of information, but the most common is Ip address, subnet mask, default gateway, and DNS information.

Question 6

What does the command confreg 0x2142 provide?

Accepted Answer

The default configuration setting is 0x2102, which tells the router to load the IOS from flash and the configuration from NVRAM. 0x2142 tells the router to bypass the configuration in NVRAM so that you can perform password recovery.

Question 7

If you want to disable STP on a port connected to a server, which command would you use?

Accepted Answer

If you have a server or other devices connected into your switch that you're totally sure won't create a switching loop if STP is disabled, you can use something called portfast on these ports. Using it means the port won't spend the usual 50 seconds to come up while STP is converging.

Question 8

Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?

Accepted Answer

A VPN allows or describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols. A VPN can be set up across any type of link.

Question 9

Which of the following devices do not operate at all levels of the OSI model?

Accepted Answer

Routersoperate no higher than layer 3 of the OSI model.

CISCO Certification Questions