CIS 330 Exam 2 Short Answer

How can a network switch be said to operate at Layer 4 of the OSI model?

A Layer 4 switch is capable of interpreting Layer 4 data.

What are the two different variations of network address translation (NAT)?

DNAT and SNAT

ARP tables might contain two different types of entries. What are they, and how are they created?

Dynamic which is automatically entered and static which needs to be manually entered.

What is MAC address spoofing?

MAC address spoofing is the impersonation of an MAC address by an attacker.

Port vs. socket

Socket: two values that identify each endpoint, an IP address and a port number. Port: a port is an endpoint of communication

What are the three different types of port number ranges as defined by IANA?

* well-known ports-Range from 0 to 1023 and are assigned by IANA to widely used and well-known utilities and applications, such as Telnet, FTP, and HTTP. * registered ports-Range from 1024 to 49151 and can be used temporarily by processes for nonstandard assignments for increased security. Default assignments of these registered ports must be registered with IANA. * dynamic and private ports-Range from 49152 to 65535 and are open for use without restriction.

What is a subnet mask?

A subnet mask is a mechanism that allows a network device to divide an IP address into a network and host number

How is IP version 6 address written and displayed?

Addresses have 128 bits and are written as eight blocks of hexadecimal numbers

What is exterior gateway protocol and its characteristics?

BGP, and it is a routing protocol used across the internet to connect internet service providers

What are some examples of routing metrics that can be used to determine the best path for a network?

MTU, latency, theorectical bandwidth.