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






3. Monitors network traffic to identify possible attacks






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






5. 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






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






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






8. Dynamic / private ports






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






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






11. Acts as an organizations internal phone system






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






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






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






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






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






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






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






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






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






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






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






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






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






25. Two authoritative sources for your domain namespace with differing contents depending on whether the query is internal or external






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






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






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






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






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






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






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






33. 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






34. 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






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






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






37. 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






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






39. 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






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






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






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






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






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






45. A variation of a smurf attack using UDP






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






47. Firewall with several NICs connected to different networks






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






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






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







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