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. 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






2. Head of a packet contains...






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






4. Examines content passing through and makes a decision on the data based on a set of criteria - normal uses email filtering and web browsing






5. Dynamic / private ports






6. An attack where fragmented UDP packets with odd offset values are sent to the victim - when the OS attempts to rebuild the fragments they overwrite each other and cause confusion






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






8. Blocks all traffic from passing through the firewall except for traffic that is explicitly allowed - also known as restrictive access - best practice






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






10. Packet filtering - proxies - stateful inspection






11. A variation of a smurf attack using UDP






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






13. Bastion host - dual homed firewall - multi homed firewall - screened host - screened subnet






14. A method - used by switches and email servers - of delivering messages which are temporarily held by an intermediary before being sent to their final destination






15. Twisted pair cable with speed capability of 10Mbps






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






17. Man in the middle attack where the attacker captures the traffic and sends it to the original recipient without altering the intercepted data






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






19. Take control of a session between a server and client - the users gets kicked off the session while the attacker inserts himself into the session by sending a reset request to the client






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






21. Connects two or more subnets - determines the best path to forward packets based on packet header and forwarding table information






22. Firewall that communicates directly with a perimeter router and the internal network - 2 NICs - screens internal traffic






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






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






25. Level 2 firewall often used to filter web traffic






26. Cable with copper core - has no physical transmission security and is easy to tap - 10mbps - maximum length 500 meters






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






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






29. A sniffer mode used to capture traffic addressed to/from another machine on the network






30. Level 1 firewall that looks at the head of a packet - (not content) - operates rapidly - application independent - either allow or deny packets






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






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






33. Connects devices together to form a subnet - broadcasts incoming packets to all devices






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






36. An attacker redirects traffic by falsifying the IP address requested by ARP request






37. Bbenign activity reported as malicious






38. Network configuration that permits selected outsiders access internal information systems






39. 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






40. Used to pass data from one VLAN to another






41. IP spoofing attack where the attacker can only send packets and has to guess about replies






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






43. Session hijacking countermeasure






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






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






46. Malicious activity not reported or detected






47. Firewall with two NICs - one internal and one external facing - NAT is often used with this firewall






48. Malicious insiders - connections that bypass the firewall (i.e. IM) - encrypted traffic/tunneling - social engineering - physical access are missed by ___________






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






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