Test your basic knowledge |

Comptia Security +: Network Security

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Level 1 firewall that looks at the head of a packet - (not content) - operates rapidly - application independent - either allow or deny packets






2. Seeks to reduce the probability and/or impact of a specific risk below an acceptable threshold






3. Attack where an attacker intercepts traffic and tricks parties at either end into believing they are communicating with each other






4. Examines a entire packet and determines action based on a complex set of rules






5. A server that sits between an intranet and it's Internet connection - masking all IP addresses






6. Evolved from IDS - monitors network traffic - detects and responds to attack on network






7. A set of rules computers use to communicate with each other across a network






8. Forging an IP address with the address of a trusted host






9. One process on every system - use local system resources - detect attacks that NIDS misses - examine data after decrypted - can be OS specific - more expensive






10. Two authoritative sources for your domain namespace with differing contents depending on whether the query is internal or external






11. Collection on honeypots






12. Acts as an organizations internal phone system






13. A logical connection point allowing computers and software to communicate and exchange data






14. Packet filtering - proxies - stateful inspection






15. One private IP address is mapped to one public IP address






16. A decoy system - intentionally left exposed to attract/distract attackers - logs and monitors attacker activities






17. Packets with a forged source IP address - purpose to conceal the identity of the sender or impersonate another computing system






18. Crashing a computer by sending oversized packets (over 64 bytes) that it doesn't know how to handle






19. A locked down/hardened host on the public side of the firewall highly exposed to attacks (i.e. web server - email server)






20. Connects devices together to form a subnet - packet forwarding is based on MAC addresses - works at the data link layer of the OSI






21. Bbenign activity reported as malicious






22. Attempt to block service or reduce activity by overloading the victim machine with ping requests






23. Creating a illegitimate website with the intention of convincing victims that they are visiting a legitimate site - typically to collect confidential information






24. IP spoofing attack where the attacker can monitor packets and participate in bidirectional communication






25. An attack where an attacker captures sensitive information and sends it again later in an attempt to replicate the transaction






26. IDS that relies on usage patterns and baseline operation - can ID new vulnerability - high rate of false alarms






27. A logical division of a computer network - in which all nodes can reach each other by broadcast at the data link layer - equivalent to a VLAN






28. A level 3 firewall that remembers / tracks network connections - maintains a state table - distinguish which side of a firewall a connection was initiated - higher security






29. A logical group of computers connected via a switch/hub that share the same network prefix in their IP address






30. A person or program masquerades as another by presenting false information to gain an illegitimate advantage






31. Firewall that intercepts and inspects messages before delivering them - placed between trusted and untrusted networks - degrade network traffic - also know as application gateway






32. Ping flooding - ping of death - smurf - fraggle - SYN flood - land - teardrop - email flood






33. Cable designed for transmission at higher speeds (100Mbps - 2Gbps) and longer distances (2km) - expensive -eliminates signal tapping






34. A ping message is broadcast to an entire network with a spoofed source IP addess of the victim computer - flooding the victim computer with responses during this attack






35. A packet filtering firewall works at this layer of the OSI model






36. A firewall that checks all layers of a packet including content - verifying an expected response to a current communication session - also call a deep packet inspection






37. Multiple network defense components are placed throughout the organizations assets and the network is properly segmented






38. Firewall with several NICs connected to different networks






39. Well known ports - allow administrative access - used for network services - considered only ports allowed to transmit traffic thru a firewall






40. A flaw in TCP/IP to verify that a packet really comes from the addess indicated in the IP header leads to this attack






41. DMZ implementation using two firewalls with different rule sets for the DMZ and intranet






42. Protocol used to map an known IP address to its corresponding media access control (MAC) address






43. Level 2 firewall often used to filter web traffic






44. Known as thicknet - 10mbps - limited to 500 meters






45. A pool of public IP addresses is shared by a collection of private IP addresses






46. Most common DMZ implementation using three firewall interfaces (internet - intranet - DMZ)






47. A feature of firewalls / routers that disguise the IP address of internal systems allowing connection to the Internet using one public address






48. Promiscuous NIC to sniff passing traffic - admin NIC to send alerts to centralized management system






49. Allows all traffic except traffic that is specifically denied - also known as permissive access






50. One device per network segment - does not use local system resources - can't examine encrypted traffic - OS independent - less expensive