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






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






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






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






5. Used to pass data from one VLAN to another






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






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






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






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






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






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






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






13. Connects devices together to form a subnet - broadcasts incoming packets to all devices






14. Packet filtering - proxies - stateful inspection






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






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






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






19. 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






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






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






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






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






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






25. Head of a packet contains...






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






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






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






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






30. Level 2 firewall often used to filter web traffic






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






32. Malicious activity not reported or detected






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






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






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






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






37. 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






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






39. A variation of a smurf attack using UDP






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






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






42. Take control of a session between a server and client - the users gets kicked off the session while the attacker inserts himself into the session by sending a reset request to the client






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






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






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






46. Collection on honeypots






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






48. Twisted pair cable with speed capability of 10Mbps






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






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