Network Services - CompTia objective 2.5

Question 1

What does a Web server do?

Answer 1

• Responds to browser requests
  
  • Uses standard web browsing protocols such as HTML and HTML5
• Stores Web pages

Question 2

What does a File server do?

Answer 2

• It is a centralized storage of documents, spreadsheets, videos, pictures, and any other files
• Standard system of file management uses SMB( Server Message Block) , Apple filing protocol( AFP), etc

Question 3

What does a Print server do?

Answer 3

• Connects a printer to the network
• May be software on the computer itself which is in turn connected to the printer.
• Sometimes built into the printer itself.
  Also uses standard printing protocols such as SMB, IPP( Internet Printing Protocol) and LPD( Line Printer Daemon)

Question 4

What is the DHCP server used for

Answer 4

DHCP or Dynamic Host Protocol

- Automatic IP address configuration( Most ISPs provide this as standard)

Question 5

What is a DNS server used for

Answer 5

DNS = Domain Name System

• Converts names to IP addresses and vice versa
• As the server is so important its data is often stored across multiple servers
• Usually managed by the ISP or IT department

Question 6

What is a Proxy Server?

Answer 6

• Acts as an intermediate server.
  Client makes request for access to the proxy server, the proxy performs the actual request to other server such as web server and the results are provided by the proxy back to the client

Question 7

What does a Mail server do?

Answer 7

Stores your incoming email and sends your outgoing email

Question 8

What is an Authentication Server used for?

Answer 8

• Login authentication to resources
• Centralized management
• Almost always an enterprise service
• Usually a set of redundant servers( no data loss)

Question 9

What is SIEM?

Answer 9

• Security Information and Event Management
• Logging of security events and information
• Also used for security alerts
• logs and long term storage or reporting
• data correlation

Question 10

What is a Syslog used for?

Answer 10

• standard for message loggin - diverse systems, consolidated log
• Integrated into the SIEM and used as a central logging receiver
• Will require a lot of storage space( LOTS)
• Uses WORM Drive technology( Write Once Ready Many) e.g DVD- R
• Protects important security logs

Question 11

What is an IDS

Answer 11

• Network Based Intrusion Detection system used to detect intrusions onto a network

Question 12

What is a IPS?

Answer 12

• Intrusion Prevention System, used to prevent people intruding onto the network

Question 13

What are Network Intrusions?

Answer 13

• Exploits against OS, applications etc

- Buffer overflows, cross-site scripting etc

Question 14

What is a All-in-one security appliance?

Answer 14

• Next generation firewall, UTM( Unified Threat Management) / Web security gateway
• Has built in URL filter/ malware inspection, spam filter, CSU/DSU and can act as a router/switch

Question 15

What is an Endpoint Management Server used for?

Answer 15

• Manages all devices on a network simultaneously from one pane of glass
• Software installations, os updates, driver updates, security patches etc are all installed at once at the same time via the server

Question 16

Examples of Embedded systems?

Answer 16

• Alarm system, door security, time card system etc.

- Purpose built device doesn’t usually have a traditional OS like windows.