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. Network configuration that permits selected outsiders access internal information systems






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






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






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






5. Dynamic / private ports






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






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






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






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






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






11. Firewall with several NICs connected to different networks






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






13. A group of hosts on logical network segment that communicate as if they were attached to the same broadcast domain - regardless of their physical location






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






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






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






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






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






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






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






21. 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






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






23. Twisted pair cable with speed capability of 10Mbps






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






25. 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






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






27. 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






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






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






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






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






32. Acts as an organizations internal phone system






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






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






35. Collection on honeypots






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






37. 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






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






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






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






41. A variation of a smurf attack using UDP






42. Well known ports - allow administrative access - used for network services - considered only ports allowed to transmit traffic thru a firewall






43. Bbenign activity reported as malicious






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






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






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






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






48. 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






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






50. IDS response method using logging and notification