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






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






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






4. Used to pass data from one VLAN to another






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






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






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






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






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






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






11. Known as thicknet - 10mbps - limited to 500 meters






12. Firewall with several NICs connected to different networks






13. Packet filtering - proxies - stateful inspection






14. User / registered ports






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






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






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






18. 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






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






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






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. Network configuration that permits selected outsiders access internal information systems






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






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






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






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






27. 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






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






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






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






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






32. Level 2 firewall often used to filter web traffic






33. IDS response method using logging and notification






34. 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






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






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






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






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






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






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






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






42. Twisted pair cable with speed capability of 1Gbps






43. IP spoofing attack where the attacker can only send packets and has to guess about replies






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






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






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






47. Monitors network traffic to identify possible attacks






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






49. 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






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