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. 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






2. IDS response method using logging and notification






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






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






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






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






7. Acts as an organizations internal phone system






8. Level 2 firewall often used to filter web traffic






9. User / registered ports






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






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






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






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






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






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






16. 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






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






18. Malicious activity not reported or detected






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






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






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






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






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






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






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






26. Session hijacking countermeasure






27. An attacker redirects valid request to malicious sites by feeding a DNS server altered records which are retained in its cache






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






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






30. Monitors network traffic to identify possible attacks






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






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






33. Firewall with several NICs connected to different networks






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






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






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






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






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






39. Head of a packet contains...






40. 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






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






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






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






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






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






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






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






48. Packet filtering - proxies - stateful inspection






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






50. 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