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Certified Ethical Hacker CEH v10 Terms QUESTIONS AND ANSWERS 100 VERIFIED A GUARANTEED
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Certified Ethical Hacker (CEH) v.10 Terms QUESTIONS AND ANSWERS 100% VERIFIED A+ GUARANTEED
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Certified Ethical Hacker (CEH) v.10 TermsQUESTIONS AND ANSWERS 100% VERIFIED A+
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1). Tcp/ip model
Ans: A set of communications protocols that allows hosts on a network to talk to each other.
Similar in lay out to the OSI model, but simpler and more accurate.
1. Application:
HTTP, FTP, SNMP, SMTP, DNS, POP, IMAP, NNTP, Telnet, SSH, DHCP, etc.
2. Transport:
TCP, UDP
3.Internet:
IP, ICMP
4. Network Access:
ARP, L2TP, STP (Spanning Tree Protocol), HDLC (High-Level Data Link Control), FDDI (Fiber
Distributed Data Interface), etc.
2). Frame
Ans: A format of bits in a specific order used to communicate with other systems on a network.
They are built from the inside out and rely on information handed down from the upper layers of the
TCP/IP model.
Contents of A Frame (In Order):
Preamble, Start Frame Delimiter (SFD), Destination MAC Address, Source MAC Address, Length/
Type, Data (IP Packet w/Source & Destination IP Addresses), and Frame Check Sequence.
3). Tcp handshake
Ans: Sets up a communications session by establishing a connection an end station/destination
host.
Three-Way Handshake: SYN, SYN/ACK, ACK
Synchronize Segment (SYN), Synchronize Acknowledgement Segment (SYN/ACK),
Acknowledgement Segment (ACK)
4). Udp (user datagram protocol)
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, Ans: Protocol that operates instead of TCP in applications where delivery speed is important
and quality can be sacrificed. "The connectionless fire-and-forget transport protocol."
Protocols that use UDP are TFTP, DNS (for lookups), and DHCP.
5). Security zones: internet
Ans: Outside the boundary of your network and uncontrolled. Can't apply security policies to this
zone. Governments try to all the time, but your organization can't.
6). Security zones: internet dmz
Ans: A controlled buffer network between your network and the uncontrolled chaos of the
Internet.
These buffer networks can be placed anywhere inside or outside of various internets and intranets;
wherever an organization desires.
7). Security zones: production network zone
Ans: A very restricted zone that strictly controls direct access from uncontrolled zones. Doesn't
hold any users.
8). Security zones: intranet zone
Ans: A controlled zone that has little-to-no heavy restrictions. It's not wide open, but
communication requires fewer strict controls internally.
9). Security zones: management network zone
Ans: Usually an area rife with VLANs and maybe controlled via IPSec and such. A highly secured
zone with very strict policies.
10). Common vulnerability scoring system (cvss)
Ans: A published standard used worldwide that provides a way to capture the principal
characteristics of a vulnerability and produce a numerical score reflecting its severity.
That score can then be translated into a qualitative representation (low, medium, high, and critical)
to help organizations properly assess and prioritize their vulnerability management processes.
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, 11). National vulnerability database (nvd)
Ans: U.S. government repository of standards-based vulnerability management data represented
using the Security Content Automation Protocol (SCAP). This data enables automation of
vulnerability management, security measurement, and compliance.
12). Ecc vulnerability categories
Ans: Misconfiguration
Default Installations
Buffer Overflows
Missing Patches (Unpatched Servers)
Design Flaws: Flaws universal to ALL OSes (encryption, data validation, logic flaws, etc.)
Operating System (OS) Flaws
Application Flaws
Open Services: Services that aren't actively used, but remain open on the system due to negligence
or ignorance.
Default Passwords
13). Vulnerability management tools
Ans: Nessus, GFI Languard, Qualys, Nikto, OpenVAS, and Retina CS
14). Zero-day attack
Ans: Attack between the time a software vulnerability is discovered and a patch to fix the
problem is released.
15). Threat modeling
Ans: A process by which developers can understand security threats to a system, determine
risks from those threats, and establish appropriate mitigations.
1. Identify Security Objectives
2. Application Overview
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, 3. Decompose Application
4. Identify Threats
5. Identify Vulnerabilities
16). Enterprise information security architecture (eisa)
Ans: Requirements and processes that help determine how an organization's information
systems are built and how they work.
17). Ecc risk management phases
Ans: 1. Identification
2. Risk Assessment
3. Risk Treatment
4. Risk Tracking
5. Risk Review
18). Security controls
Ans: Countermeasures security personnel put into place to minimize risks as much as possible
and protect the assets of an organization from threats.
Categories:
Physical, Technical/Logical, or Administrative
Subcategories:
Preventative, Detective, or Corrective
19). Business impact analysis (bia)
Ans: Identification of the systems and processes critical for business operations and how the
organization would be affected if they were taken down by attackers.
20). Maximum tolerable downtime (mtd)
Ans: The maximum period of time that a business process can be down before the survival of
the organization is at risk. Provides a means to prioritize the recovery of assets should the worst
occur.
21). Business continuity plan (bcp)
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