CISCO Certification Questions

The presentation layer makes sure that data is in a readable format for the Application layer.

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.

The most common attack on a network today is a denial of service (DoS) because they are the easiest attack to achieve.

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

RIPng uses the multicast IPv6 address of FF02::9. If you remember the multicast addresses for IPv4, the numbers at the end of each IPv6 address are the same.

When a ping to the local host IP address fails, you can assume the NIC is not functional.

A default Class B is 255.255.0.0. A Class B 255.255.255.0 mask is 256 subnets, each with 254 hosts. We need fewer subnets. If we used 255.255.240. 0, this provides 16 subnets. Let's add one more subnet bit. 255.255.248.0. This is 5 bits of subnetting, which provides 32 subnets. This is our best answer A/21

The application layer is responsible for finding the network resources broadcast from a server and adding flow control and error control (if the application developer chooses)