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






2. 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






3. IDS response method using logging and notification






4. Acts as an organizations internal phone system






5. Dynamic / private ports






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






7. Twisted pair cable with speed capability of 1Gbps






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






9. An application layer gateway works at this layer of the OSI model






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






11. Used to pass data from one VLAN to another






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






13. 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






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






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






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






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






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






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






20. 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






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






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






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






24. Unauthenticated connections - creating the potential for a successful connection as an anonymous user






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






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






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






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






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






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






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






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






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






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






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






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






37. Packet filtering - proxies - stateful inspection






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






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






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






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






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






43. 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






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






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






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






47. Firewall with several NICs connected to different networks






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






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






50. 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