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Test your basic knowledge |
GIAC
Start Test
Study First
Subjects
:
certifications
,
giac
,
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. It interacts with the application layer to determine which network services will be required
Snort
Firewall
the application layer
The OSI Protocol Stack
2. The Practice of sending an ACK inside another packet going to the same destination
Ack Piggybacking
Types of ATM virtual circuits
WAN
NAC
3. Relies on executable code insertion and user interaction to spread
Logic bomb
Worms
NAC
Parasitic malware
4. Connects many WANs - MANs - and LANs - provided via ISP
Some firewall benefits
TFTP
WAN
Internet
5. Common backdoor to open a port - port scan scans for open ports on remote host - scans 0 - 65 -535 twice. TCP and UDP
Port scan
Denial of service
Nmap scanning techniques
IDS data normalization
6. Very simplistic. All systems are attached to the same cable segment. Rarely used because they're unreliable - low fault tolerance - poor traffic isolation - with limited scalability
Bus Topology
A netmask
The different cable categories
Datagram length of a UDP packet
7. Free linux WLAN analysis tool - completely passive - cannot be detected - supports advanced GPS integration and mapping features - used for wardriving - WLAN vulerability assessment
Kismet
A blind FTP
The difference in stacks
Stateful firewall
8. Uses a 1 to 1 substitution of characters - rotate the alphabet by 'n' number of characters - rot+X means rotate the letters X characters
IDS signature analysis work
Bridge
Some reasons to use UDP over TCP
Rotation?
9. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0
Types of ATM virtual circuits
OS Command Injection defenses
Some disadvantages of honeypots
What range is a class B network?
10. Network scanner.
Hping
What threats should be protected against - based on threat levels
Nmap
The OSI model
11. Poor programming without error checking can allow commands to be run in an input field. This can point to a command further in the buffer that will execute the attacker's payload.
Some ways to bypass firewall protections
Buffer overflow
Nmap
Shallow packet inspection
12. Take the file and try to compress it. If it compresses - it means there is a pattern and it's more easily crackable
Warning
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on line
183
13. Prepends to the beginning of the file and gains control when the first instruction of the infected COM file is executed - appending to the end - virus writes its payload to the end and inserts jump instruction as the first instruction - which execute
Some ways to bypass firewall protections
What range is a class A network?
COM/Script program infector
HIDS monitor
14. Confidentiality - integrity - availability
NIDS advantages
Stateful firewall
Risk
The CIA triad
15. Combines the functionality of a hub and bride into a single device - keeps track of MACs attached to each port
Vulnerabilities
Some firewall benefits
Switches
When setting up a virtual circuit
16. Confidentiality - integrity - availability
The three goals of security
Some network design objectives
Hubs
Some external threat concerns
17. Connection oriented - before systems can communicate over an ATM network - they must establish a virtual circuit between each other - this can span across multiple ATM switches that also handle communications for other systems - at the end of the con
The session layer
A netmask
What primary threats should be protected against
ATM work
18. Replicates traffic onto all ports - no traffic monitoring - cannot control which ports should or shouldn't receive frames - forming a large collision domain.
IDS not
Some FTP dangers
What range is a class B network?
Hubs
19. Resource exhaustion like DDoS or fork attack - unexpected input value the machine does not know how to process
The presentation layer
Denial of service
File Integrity checking work
IDS not
20. Uses inclusive or exclusive lists - inclusive analysis utilizes a list of keywords - exclusive analysis utilizes a list of events that can be ignored
Log monitoring work?
Risk
Deep packet inspection
What threats should be protected against - based on threat levels
21. Handles the network address scheme and connectivity of multiple network segments. It handles communication.
Arbitrary substitution
Address Resolution Protocol (ARP)
Plaintext
The network layer
22. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS
The conficker worm
Some common UDP ports
Race conditions
Rootkit
23. Good for multimedia - can use small single packets - multicasting is required - speed is the highest priority
Integrity of Data
Trojan horse
Some reasons to use UDP over TCP
Multi protocol label switching
24. Stateful firewalls maintain state of traffic flows
Nmap scanning techniques
Stateful firewall
Trojan horse
IDS
25. Network traffic to the host - typically listens on all interface - uses signature analysis to identify events of interest
HIDS monitor
Rootkit
The network layer
Alteration of code
26. size is whatever the length of the UDP portion of the packet. Could be as large as 65 -535
IDS signature analysis work
Datagram length of a UDP packet
Honeypot
Log monitoring work?
27. Not a replacement for firewalls - hardening - strong policies - or other DiD methods - low maintenance - inexpensive
IDS not
OS Command Injection defenses
Address resolution protocol
Arbitrary substitution
28. Improper deployment can increase attack risk - if production systems aren't sufficiently protected - they can be vulnerable from a honeypot - legal liability
Some ways to bypass firewall protections
Some NIDS topology limitations
ACK piggybacking
Some disadvantages of honeypots
29. Threat requires a vector to cross the vulnerability - stop the ability of the threat to use the vector
The Information Centric defense in depth
Some NIDS topology limitations
What range is a class C network?
The threat vector analysis in defense in depth
30. Small program triggered by an event that provides an action. E.g. scheduled file removal if countdown isn't reset - ie: employee was fired
Some NIDS topology limitations
Proxy or application gateway
Permutation
Logic bomb
31. flags anomalous conditions in traffic on the network - requires understanding on what is normal - bases good traffic as a baseline
Honeypot
Anomaly analysis work
War Dialing
To establish a TCP session
32. An appliance that controls access between public internet and a companies private network - or between a PC NIC and the rest of the PC.
Stateless packet filter
Some reasons to use UDP over TCP
Firewall
What ways should the crypto key be protected?
33. Full open - half open (stealth scan) - UDP - Ping
Nmap scanning techniques
Some firewall challenges
Program infector
Buffer overflow
34. local area network - small network confined to small location - all equipment owned by a single entity - vulnerable to inside threats and logic bombs
Deep packet inspection
Internet
LAN
Race conditions
35. Unencrypted message in its original form
Plaintext
Honeypot
Ack Piggybacking
Bridge
36. One is for talking - one is for implementing
The difference in stacks
DDoS attack
Some common UDP ports
Some reasons to use UDP over TCP
37. Protects internal/external systems from attack - filters communications based on content - performs NAT - encrypts communications for VPN - logging to aid in intrusion detection
Network stumbler
A blind FTP
Some firewall benefits
IDS
38. Netmasks or subnets provide a method for identifying what portion of an address is the network - and what portion is the host
Some honeypot advantages
A netmask
IDS signature analysis work
To close a TCP session
39. It interacts with data and prepares it to be transmitted across the network. It ensures reliable connectivity from end-to-end
Risk
The transport layer
The four basic approaches to defense in depth
What range is a class C network?
40. True positive - false positive - true negative - false negative
The four types of events reported by IDS
Boot record infector
IDS not
Types of ATM virtual circuits
41. -Malicious code might execute destructive overwrite to hard disks -Malicious mas mailing code might expose sensitive information to the internet - web server compromise might expose organization to ridicule - Web server compromise might expose custom
IDS
CIDR
EXE program infector
Some external threat concerns
42. An agreement on how different computer will work - protocols define the format and order of messages and what to do upon receipt of the messages - basically the rules of the network
The three goals of security
The threat vector analysis in defense in depth
A network protocol
War Dialing
43. The practice of sending an ACK inside another packet going to the same destination
The session layer
ACK piggybacking
A network protocol
Bridge
44. Used for connecting two physical segments of a network - segments traffic - breaks up collision domains - not generally used because of switches
A netmask
War Dialing
Bridge
EXE program infector
45. Publish separate mail - web - and DNS servers to the internet - provide appropriate access from internal network to internet - protect internal from external attack - provide defense in depth - protect all aspects of the system
Smurf attack
File integrity checking work
Some network design objectives
Checksum in UDP
46. A spoofed IP is used to send a SYN to the target. It then responds with a SYN/ACK that never receives the final ACK to complete the handshake. This occupies a portion of the target's pre-established buffer for TCP and can prevent the target from acce
The TCP/IP model
The protected enclave to defense in depth
SYN flood
HIDS monitor
47. deployment challenges including topology and access limitations - analyzing encrypted traffic - quantity vs. quality of signatures - performance limitations with extensive analysis techniques - very costly for proper management
Some firewall benefits
NIDS challenges
The Uniform Protection to defense in depth
The different cable categories
48. logic bomb - trojan horse - trap door
Program infector
Some types of malicious code
Switches
the application layer
49. Protected at rest - protected in transit - secure the key
What ways should the crypto key be protected?
Some other UDP based protocols
Multi protocol label switching
Some common TCP ports
50. TCP/IP - the IP protoco - The core routing protocol of the internet - - deals with transmission of packets between end points - defines the addressing scheme for the internet
When implementing protocols - what stack should be used?
What range is a class C network?
What's a VLAN
The four types of events reported by IDS