CCST Networking Questions:

1. You have an IP of 156.233.42.56 with a subnet mask of 7 bits. How many hosts and subnets are possible assuming that subnet 0 is not used?

a. 126 subnets and 510 hosts
b. 128 subnets and 512 hosts
c. 510 subnets and 126 hosts
d. 512 subnets and 128 hosts

ans. a

Explanation:
Class B network has the form N.N.H.H, the default subnet mask is 16 bits long. There is additional subnet mask of 7 bits long.
7 bits of subnet mask corresponds to (2^7)=128.
9 bits (16-7) of host addresses corresponds to (2^9-2)=512-2 = 510 hosts (note that all ones and all zeros bits are reserved).
Some times, the subnet mask is specified with the bits available in the default subnet mask. In this case the bits available in default subnet mask is 16. Therefore, total number of bits available in the subnet mask are 16+7=23. If you are given a subnet mask of 23 bits long for a class B address, it is understood that it contains the bits from the default subnet mask as well.

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CCST CyberSecurity Practice Questions


1. Which of the following statements is true about tokens?

a. A token can be a physical device such as smart card or a one-time password issued to a user such as SecureID token.

b. A token is essentially a logical parameter used for secure authentication.

c. Tokens are used for creating SSL connections.

d. Tokens provide the least secure authentication environment.

ans: a

Explanation:

A token can be a physical device such as a smart card or an electronic process such as RSA's SecureID token. Tokens provide one of the most secure authentication environments, because typically a token is unique to a user, and it is difficult to spoof.

2. What are vulnerability databases?

a. Comprehensive lists of known software vulnerabilities and their associated risk levels.

b. Sources of information about potential cyber threats and attacks.

c. Tools used to assess network performance and identify areas of improvement.

d. None of the above.

ans. a


Explanation:
Vulnerability databases are comprehensive lists of known software vulnerabilities and their associated risk levels. Examples of vulnerability databases include the National Vulnerability Database (NVD) and the Common Vulnerabilities and Exposures (CVE) database.

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Broad topics covered in the practice tests and the exam cram are given below:

CCST  Cybersecurity Certification Cram Notes
The exam objectives for this certification include:

1. Essential Security Principles

2. Basic Network Security Concepts

3. Endpoint Security Concepts

4. Vulnerability Assessment and Risk Management

5. Incident Handling

1.0 Essential Security Principles
1.1 Define essential security principles
1. Vulnerabilities: Weaknesses or flaws in a system's design, implementation, or configuration that can be exploited to compromise its security.

2. Threats: Potential dangers or harmful events that can exploit vulnerabilities and cause harm to a system or organization's assets, operations, or reputation.

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2. Answers with detailed explanation for each question
3. Simlest and router simulation type questions
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CCST Networking Study Notes

CCST Certification Cram Notes
The exam objectives for this certification include:

1. Standards and Concepts

2. Addressing and Subnet Formats

3. Endpoints and Media Types

4. Infrastructure

5. Diagnosing Problems

6. Security

7. Appendix

1. Standards and Concepts
1.1 TCP/IP model, OSI model, frames and packets, addressing
TCP/IP Model: The TCP/IP model is a conceptual framework that describes the functions required for network communication. It stands for Transmission Control Protocol/Internet Protocol, which are the two main protocols used in the Internet. The TCP/IP model consists of four layers:

1. Application Layer: This layer provides network services to the user applications. It includes protocols like HTTP (Hypertext Transfer Protocol), SMTP (Simple Mail Transfer Protocol), and FTP (File Transfer Protocol).

2. Transport Layer: The transport layer ensures reliable data delivery between hosts. It includes protocols like TCP (Transmission Control Protocol), which provides reliable, connection-oriented communication, and UDP (User Datagram Protocol), which provides connectionless, unreliable communication.

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