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 application layer gateway works at this layer of the OSI model






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






3. 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






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






5. 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






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






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






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






9. Twisted pair cable with speed capability of 1Gbps






10. A physical or logical subnetwork that houses systems accessible to a larger untrusted network - usually the Internet - also known as DMZ






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






12. Twisted pair cable with speed capability of 10Mbps






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






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






15. Head of a packet contains...






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






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






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






19. Promiscuous NIC to sniff passing traffic - admin NIC to send alerts to centralized management system






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






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






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






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






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






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






26. Bbenign activity reported as malicious






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






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






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






30. Collection on honeypots






31. 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






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






33. Used to pass data from one VLAN to another






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






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






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






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






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






39. One private IP address is mapped to one public IP address






40. A person or program masquerades as another by presenting false information to gain an illegitimate advantage






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






42. A variation of a smurf attack using UDP






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






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






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






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






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






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






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. 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