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






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






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






4. Packet filtering - proxies - stateful inspection






5. Level 2 firewall often used to filter web traffic






6. 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






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






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






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






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






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






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






13. 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






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






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






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






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






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






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






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






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






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






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






24. 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






25. Used to pass data from one VLAN to another






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






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






28. A variation of a smurf attack using UDP






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






30. 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






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






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






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






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






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






36. 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






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






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






39. Network configuration that permits selected outsiders access internal information systems






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






41. Collection on honeypots






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






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






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






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






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






47. Web servers - FTP servers - DNS servers - mail servers should be located on the _____________






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






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






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