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






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






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






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






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






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






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






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






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






10. Packet filtering - proxies - stateful inspection






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






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






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






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






15. Used to pass data from one VLAN to another






16. 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






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






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






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






20. Blocks all traffic from passing through the firewall except for traffic that is explicitly allowed - also known as restrictive access - best practice






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






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






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






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






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






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






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






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






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






30. Bbenign activity reported as malicious






31. Twisted pair cable with speed capability of 1Gbps






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






33. Twisted pair cable with speed capability of 10Mbps






34. 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






35. 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






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






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






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






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






40. Malicious activity not reported or detected






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






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






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






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






45. A variation of a smurf attack using UDP






46. Monitors network traffic to identify possible attacks






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






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






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






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