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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. Ping flooding - ping of death - smurf - fraggle - SYN flood - land - teardrop - email flood






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






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






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






5. User / registered ports






6. 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






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






8. A variation of a smurf attack using UDP






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






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






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






12. Head of a packet contains...






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






14. Collection on honeypots






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






16. 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






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






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






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






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






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






22. Packet filtering - proxies - stateful inspection






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






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






25. 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






26. Malicious activity not reported or detected






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






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






29. A group of hosts on logical network segment that communicate as if they were attached to the same broadcast domain - regardless of their physical location






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






31. Most common DMZ implementation using three firewall interfaces (internet - intranet - DMZ)






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






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






34. A locked down/hardened host on the public side of the firewall highly exposed to attacks (i.e. web server - email server)






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






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






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






38. 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






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






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






41. Session hijacking countermeasure






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






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






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






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






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






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






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






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






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







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