Network Services

Question 1

What is a DNS server?

Answer 1

Domain Name Sever. A server which coverts names to IP addresses and vice versa.

Question 2

What is a DHCP server?

Answer 2

Dynamic Host Configuration Protocol. This server provides automatic IP configuration. This service is available on most home routers.

Question 3

What is a file server?

Answer 3

a server which stores files in a centralized location. The storage of things like documents, spreadsheets, videos, pictures etc

Question 4

What is SMB?

Answer 4

Server Message Block. A communication protocol used by windows. You can copy, delete and rename files on the server from here.

Question 4

What is the apple version of SMB?

Answer 4

AFP (Apple Filing Protocol)

Question 5

What are some standardized protocols that allow you to send print jobs to a printer?

Answer 5

SMB (Server Message Block), IPP (Internet Printing Protocol) LPD (Line Printer Daemon)

Question 6

What is SIEM?

Answer 6

Security Information and Event Manager. A form of syslog used in large organizations. it helps an organization detect, analyze and respond to security threats.

Question 7

What is a web server?

Answer 7

web servers are responsible for responding to browser requests that you make from your computer.

Question 8

What protocols do webservers use?

Answer 8

HTTP and HTTPS

Question 9

What is an authentication server?

Answer 9

a server that centralizes all usernames and passwords for authentication purposes.

Question 10

What types of services does an all in one security appliance provide?

Answer 10

URL Filter/Content Inspection, possibly able to identify malware, act as a spam filter, may have other networking features such as CSU/DSU, can act as a router, firewall capabilities, act as a VPN endpoint.

Question 11

What is a load balancer?

Answer 11

a device or software that distributes network or application traffic across multiple servers.

Question 12

What are some ways load balancers work?

Answer 12

They can offload TCP so that it has a constant connection between all of the servers connected to it. It can also provide SSL offloading. They can commonly cache information

Question 13

In what ways can a load balancer be configured?

Answer 13

advanced configuration can be performed on the traffic going through the load balancer so that certain webpages or applications can have priority. You can also prioritize certain applications to certain servers. This is called application centric balancing.

Question 14

What is a proxy server?

Answer 14

servers that provide additional security. it sits in the middle of a conversation and examines that nothing in responses are malicious.

Question 15

What other security controls can be put into proxy servers?

Answer 15

Access control, caching, url filtering/content scanning

Question 16

What is SCADA/ICS?

Answer 16

Supervisory Control and Data Acquisition System also referred to as Industrial Control Systems. They are responsible for control and management of industrial level machines.

Question 17

What is a legacy system?

Answer 17

an old or outdated system, technology or software that continues to be used because it still performs the functions it was intended to.

Question 18

What is an embedded system?

Answer 18

a purpose built device. Its not common to have direct access to the OS. Examples are alarm systems, door security, time card system.

Question 19

What is IoT?

Answer 19

Internet of Things. Appliances that contain internet and wifi connectivity. Such as appliances, smart devices, and air control systems, smart doorbells.