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






2. Malicious activity not reported or detected






3. Cable with copper core - has no physical transmission security and is easy to tap - 10mbps - maximum length 500 meters






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






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






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






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






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






9. Firewall with several NICs connected to different networks






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






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






12. 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






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






14. 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






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






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






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






18. Dynamic / private ports






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






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






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






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






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






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






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






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






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






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






29. Acts as an organizations internal phone system






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






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






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






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






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






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






36. DMZ implementation using two firewalls with different rule sets for the DMZ and intranet






37. IPS response method - terminate process/session - block/reject and redirect network traffic






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






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






40. Session hijacking countermeasure






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






42. Head of a packet contains...






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






44. Monitors network traffic to identify possible attacks






45. Unauthenticated Windows session where an attacker can gather list of users - groups - machines - shares - user and host SID






46. 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






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






48. 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






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






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