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Test your basic knowledge |
Comptia Security +: Network Security
Start Test
Study First
Subjects
:
certifications
,
comptia-security-+
,
it-skills
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. Dynamic / private ports
49 -152 - 65 -535
active
extranet
dual homed
2. Level 1 firewall that looks at the head of a packet - (not content) - operates rapidly - application independent - either allow or deny packets
honeypot
multiple interface firewall
coaxial
packet filter
3. IDS that relies on the identification of known attack signatures
NIDS
promiscuous
knowledge based
packet filter
4. Connects two or more subnets - determines the best path to forward packets based on packet header and forwarding table information
null session
router
ARP
ping flooding
5. Malicious insiders - connections that bypass the firewall (i.e. IM) - encrypted traffic/tunneling - social engineering - physical access are missed by ___________
firewalls
false positive
honeypot
land attack
6. A decoy system - intentionally left exposed to attract/distract attackers - logs and monitors attacker activities
dual homed
deny by default
honeypot
stateful inspection
7. An attacker redirects traffic by falsifying the IP address requested by ARP request
fiber optic
zone transfer
ARP poisoning
HIDS
8. A physical or logical subnetwork that houses systems accessible to a larger untrusted network - usually the Internet - also known as DMZ
source - destination - protocol
null session
teardrop
screened subnet
9. IP spoofing attack where the attacker can monitor packets and participate in bidirectional communication
informed
layered
network
NIDS network connections
10. Unauthenticated connections - creating the potential for a successful connection as an anonymous user
screened subnet
null session
firewall architectures
IP spoofing
11. Known as thicknet - 10mbps - limited to 500 meters
proxy server
10Base5
firewall architectures
knowledge based
12. An application layer gateway works at this layer of the OSI model
stateful inspection
application
application gateway
split horizon DNS
13. Evolved from IDS - monitors network traffic - detects and responds to attack on network
fraggle
NIPS
risk mitigation
protocol
14. Twisted pair cable with speed capability of 10Mbps
land attack
deny by default
cat3
null session
15. Collection on honeypots
passive
bastion host
NIDS
honeynet
16. A flaw in TCP/IP to verify that a packet really comes from the addess indicated in the IP header leads to this attack
static NAT
IP spoofing
stateful inspection
passive
17. Generate random TCP sequence numbers and encrypt traffic countermeasure what attacks
land attack
tcp/ip hijacking
NIPS
man in the middle and replay
18. Used by ISPs - single public network IP address is shared among many hosts on a private network - also known as PAT
port address translation
private
stateful inspection
multi homed
19. Type of IP addresses not routed on the internet: 10.x.x.x - 172.16.x.x - 192.168.x.x
HIDS
0 - 1023
fraggle
private
20. When a hacker takes over a TCP session between two machines - also known as session hijacking - foiled by the use of encrypted sessions
tcp/ip hijacking
application gateway
behavior based
defense in depth
21. Ping flooding - ping of death - smurf - fraggle - SYN flood - land - teardrop - email flood
fraggle
DoS attacks
static NAT
NAT
22. 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
cat5
active
broadcast domain
VLAN
23. IDS response method using logging and notification
spoofing
broadcast domain
passive
proxy
24. One private IP address is mapped to one public IP address
ARP poisoning
static NAT
hub
proxy server
25. A sniffer mode used to capture traffic addressed to/from another machine on the network
NIDS network connections
smurf
honeynet
promiscuous
26. 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
extranet
fiber optic
session hijacking
hub
27. Packet filtering - proxies - stateful inspection
firewalls
passive
SYN flood
router
28. Variation of the SYN flood where SYN packets are spoofed to have the same source and destination IP address and port
land attack
HIDS
IP spoofing
port
29. A logical connection point allowing computers and software to communicate and exchange data
content filter
screened host
firewalls
port
30. Examines a entire packet and determines action based on a complex set of rules
DNS spoofing
packet filter
allow by default
application gateway
31. Known as thinnet - 10mbps - limited to 185 meters
null session
HIDS
informed
10base2
32. IP - email - website - DNS - and ARP
spoofing
spoofing attacks
fiber optic
proxy
33. A locked down/hardened host on the public side of the firewall highly exposed to attacks (i.e. web server - email server)
IP spoofing
store and forward
bastion host
zone transfer
34. One process on every system - use local system resources - detect attacks that NIDS misses - examine data after decrypted - can be OS specific - more expensive
firewalls
HIDS
screened host
repeater
35. An attacker redirects valid request to malicious sites by feeding a DNS server altered records which are retained in its cache
false positive
firewalls
DNS spoofing
passive
36. IDS that relies on usage patterns and baseline operation - can ID new vulnerability - high rate of false alarms
HIDS
NIDS
bastion host
behavior based
37. 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
session hijacking
stateful inspection
land attack
multi homed
38. Allows all traffic except traffic that is specifically denied - also known as permissive access
allow by default
false positive
proxy
content filter
39. Firewall with two NICs - one internal and one external facing - NAT is often used with this firewall
honeynet
cat5
dual homed
HIDS
40. A packet filtering firewall works at this layer of the OSI model
website spoofing
hub
network
PBX (Private Branch Exchange)
41. Seeks to reduce the probability and/or impact of a specific risk below an acceptable threshold
passive
tcp/ip hijacking
risk mitigation
false positive
42. A pool of public IP addresses is shared by a collection of private IP addresses
HIDS
multi homed
proxy
dynamic NAT
43. Connects devices together to form a subnet - broadcasts incoming packets to all devices
private
hub
protocol analyzer
split horizon DNS
44. A person or program masquerades as another by presenting false information to gain an illegitimate advantage
proxy
spoofing
port address translation
PBX (Private Branch Exchange)
45. Cable with copper core - has no physical transmission security and is easy to tap - 10mbps - maximum length 500 meters
10base2
proxy
VLAN
coaxial
46. Examines content passing through and makes a decision on the data based on a set of criteria - normal uses email filtering and web browsing
store and forward
content filter
source - destination - protocol
dynamic NAT
47. Firewall that communicates directly with a perimeter router and the internal network - 2 NICs - screens internal traffic
informed
spoofing
firewalls
screened host
48. Blocks all traffic from passing through the firewall except for traffic that is explicitly allowed - also known as restrictive access - best practice
private
tcp/ip hijacking
deny by default
cat5
49. A DoS attack that subverts the normal "three way handshake" of TCP/IP by sending SYN packets - but no corresponding ACK packets
private
SYN flood
protocol analyzer
false positive
50. Attack where an attacker intercepts traffic and tricks parties at either end into believing they are communicating with each other
DNS spoofing
passive
DoS attacks
man in the middle