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






2. 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






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






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






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






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






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






8. 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






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






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






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






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






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






14. Used to pass data from one VLAN to another






15. Twisted pair cable with speed capability of 10Mbps






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






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






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






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






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






21. Malicious activity not reported or detected






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






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






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






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






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






27. When a hacker takes over a TCP session between two machines - also known as session hijacking - foiled by the use of encrypted sessions






28. Monitors network traffic to identify possible attacks






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






30. 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






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






32. Bbenign activity reported as malicious






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






34. 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






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






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






37. Variation of the SYN flood where SYN packets are spoofed to have the same source and destination IP address and port






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






39. IDS that relies on the identification of known attack signatures






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






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






42. Level 2 firewall often used to filter web traffic






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






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






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






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






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






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






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






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