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 packet filtering firewall works at this layer of the OSI model






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






3. Level 2 firewall often used to filter web traffic






4. 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






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






6. Bbenign activity reported as malicious






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






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






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






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






11. User / registered ports






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






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






14. Monitors network traffic to identify possible attacks






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






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






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






18. 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






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






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






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






22. Packet filtering - proxies - stateful inspection






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






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






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






26. Dynamic / private ports






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






28. Packets with a forged source IP address - purpose to conceal the identity of the sender or impersonate another computing system






29. Twisted pair cable with speed capability of 10Mbps






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






31. Firewall with several NICs connected to different networks






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






33. Twisted pair cable with speed capability of 1Gbps






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






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






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






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






38. A variation of a smurf attack using UDP






39. Forging an IP address with the address of a trusted host






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






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






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






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






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






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






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






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






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






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






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