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. IDS that relies on the identification of known attack signatures






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






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






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






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






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






7. 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






8. Bbenign activity reported as malicious






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






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






11. IP - email - website - DNS - and ARP






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






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






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






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






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






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






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






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






20. Packet filtering - proxies - stateful inspection






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






22. Firewall with several NICs connected to different networks






23. Collection on honeypots






24. Unauthenticated connections - creating the potential for a successful connection as an anonymous user






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






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






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






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






29. Twisted pair cable with speed capability of 10Mbps






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






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






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






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






34. An application layer gateway works at this layer of the OSI model






35. Head of a packet contains...






36. Man in the middle attack where the content of an intercepted message is altered before it is sent on






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






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






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






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






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






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






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






44. Level 2 firewall often used to filter web traffic






45. Malicious activity not reported or detected






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






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






48. Acts as an organizations internal phone system






49. A variation of a smurf attack using UDP






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