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 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






2. IDS response method using logging and notification






3. User / registered ports






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






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






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






7. Type of IP addresses not routed on the internet: 10.x.x.x - 172.16.x.x - 192.168.x.x






8. Generate random TCP sequence numbers and encrypt traffic countermeasure what attacks






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






10. Capture and analyze network traffic - also known as packet analyzer - sniffer - network analyzer






11. Twisted pair cable with speed capability of 1Gbps






12. Level 2 firewall often used to filter web traffic






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






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






15. 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






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






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






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






19. Monitors network traffic to identify possible attacks






20. Used by ISPs - single public network IP address is shared among many hosts on a private network - also known as PAT






21. Unauthenticated Windows session where an attacker can gather list of users - groups - machines - shares - user and host SID






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






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






24. Cable used most in networks - maximum speed 1Gbps - maximum length 100 meters - susceptible to tap






25. A DoS attack that subverts the normal "three way handshake" of TCP/IP by sending SYN packets - but no corresponding ACK packets






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






27. Known as thinnet - 10mbps - limited to 185 meters






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






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






30. Malicious activity not reported or detected






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






32. 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






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






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






35. Twisted pair cable with speed capability of 10Mbps






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






37. A complete transfer of all DNS zone information from one server to another






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






39. IPS response method - terminate process/session - block/reject and redirect network traffic






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






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






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






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






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






45. Amplifies the signal of incoming packets before broadcasting them to the network






46. 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






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






48. Bbenign activity reported as malicious






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






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