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. 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






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






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






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






5. Level 2 firewall often used to filter web traffic






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






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






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






9. Malicious activity not reported or detected






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






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






12. A variation of a smurf attack using UDP






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






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






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






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






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






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






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






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






21. 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






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






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






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






25. 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






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






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






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






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






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






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






32. Dynamic / private ports






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






34. 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






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






36. Collection on honeypots






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






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






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






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






41. Monitors network traffic to identify possible attacks






42. 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






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






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






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






46. Session hijacking countermeasure






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






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






49. 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






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