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 an attacker captures sensitive information and sends it again later in an attempt to replicate the transaction






2. Head of a packet contains...






3. A variation of a smurf attack using UDP






4. Used to pass data from one VLAN to another






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






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






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






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






9. Firewall with several NICs connected to different networks






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






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






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






13. Monitors network traffic to identify possible attacks






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






15. Packet filtering - proxies - stateful inspection






16. Session hijacking countermeasure






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






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






19. 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






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






21. Cable used most in networks - maximum speed 1Gbps - maximum length 100 meters - susceptible to tap






22. 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






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






24. 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






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






26. 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






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






28. 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






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






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






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






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






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






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






35. Dynamic / private ports






36. Malicious activity not reported or detected






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






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






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






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






41. User / registered ports






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






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






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






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






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






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






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






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






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