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. IDS response method using logging and notification






2. Monitors network traffic to identify possible attacks






3. Used to pass data from one VLAN to another






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






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






6. 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






7. Firewall with several NICs connected to different networks






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






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






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






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






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






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






14. 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






15. When a hacker takes over a TCP session between two machines - also known as session hijacking - foiled by the use of encrypted sessions






16. Session hijacking countermeasure






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






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






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






20. 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






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






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






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






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






25. Creating a illegitimate website with the intention of convincing victims that they are visiting a legitimate site - typically to collect confidential information






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






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






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






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






30. 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






31. Collection on honeypots






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






33. 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






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






35. User / registered ports






36. Malicious activity not reported or detected






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






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






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






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






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






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






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






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






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






46. Unauthenticated connections - creating the potential for a successful connection as an anonymous user






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






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






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






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