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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. Firewall with several NICs connected to different networks






2. Level 2 firewall often used to filter web traffic






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






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






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






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






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






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






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






10. Bbenign activity reported as malicious






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






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






13. Head of a packet contains...






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






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






16. Acts as an organizations internal phone system






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






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






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






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






21. Session hijacking countermeasure






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






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






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






25. Web servers - FTP servers - DNS servers - mail servers should be located on the _____________






26. Twisted pair cable with speed capability of 10Mbps






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






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






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






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






31. Used to pass data from one VLAN to another






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






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






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






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






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






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






38. 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






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






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






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






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






43. A locked down/hardened host on the public side of the firewall highly exposed to attacks (i.e. web server - email server)






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






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






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






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






48. 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






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






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







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