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






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






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






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






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






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






7. 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






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






9. Firewall that communicates directly with a perimeter router and the internal network - 2 NICs - screens internal traffic






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






11. Malicious activity not reported or detected






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






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






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






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






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






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






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






19. 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






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






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






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






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






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






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






26. 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






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






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






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






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






31. Collection on honeypots






32. Twisted pair cable with speed capability of 1Gbps






33. Acts as an organizations internal phone system






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






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






37. A variation of a smurf attack using UDP






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






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






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






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






42. User / registered ports






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






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






45. IDS response method using logging and notification






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






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






48. Head of a packet contains...






49. Dynamic / private ports






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