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 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






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






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






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






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






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






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






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






9. An attacker redirects traffic by falsifying the IP address requested by ARP request






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






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






12. Twisted pair cable with speed capability of 1Gbps






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






14. 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






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






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






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






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






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






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






22. Monitors network traffic to identify possible attacks






23. 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






24. Used to pass data from one VLAN to another






25. 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






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






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






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






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






30. 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






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






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






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






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






35. Acts as an organizations internal phone system






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






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






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






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






40. 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






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






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






43. 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






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






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






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






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






48. A variation of a smurf attack using UDP






49. User / registered ports






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