Question

1. Among other things the X.800 Security Architecture defines security services and security mechanisms that are used by security professionals in implementing security in a network infrastructure.

True

False

2. The larger the symmetric key the stronger the key is from brute force or cryptanalysis cracking?

True

False

3. An application level gateway that is hardened or secured to protect against security attacks is known as what?___________

4. What is used to verify a functional requirement is met? ___________

5. Routers can be set up at the boundary between the internet and a system or in the interior of a system.

True

False

Answer 1

Answer For The First Question

1. Among other things the X.800...................

Answer:True, why?

X.800 , is the recommended security architecture for OSI by ITU(International Telecommunication Union).

The OSI security architecture focuses on security attacks, mechanisms, and services.These can be defined as,

• Security attack: Any action that compromises the security of information
owned by an organization.
• Security mechanism: A process (or a device incorporating such a process) that
is designed to detect, prevent, or recover from a security attack.
• Security service: A processing or communication service that enhances the
security of the data processing systems and the information transfers of an
organization. The services are intended to counter security attacks, and they
make use of one or more security mechanisms to provide the service.

Answer For The Second Question

2. The larger the symmetric key the stronger the key..........

Answer:True, why?

In cryptography, key size or key length is the number of bits in a key used by a cryptographic algorithm (such as a cipher).

Key length defines the upper-bound on an algorithm's security (i.e. a logarithmic measure of the fastest known attack against an algorithm), since the security of all algorithms can be violated by brute-force attacks. Ideally, the lower-bound on an algorithm's security is by design equal to the key length (that is, the security is determined entirely by the keylength).For instance, Triple DES was designed to have a 168 bit key, but an attack of complexity 2112 is now known. So key length does matter

Answer For The Third Question

3. An application level gateway that is hardened or secured..........

Answer, Firewall /  Application proxy

An application-level gateway, also called an application proxy.

An application gateway or application level gateway (ALG) is a firewall proxy which provides network security. It filters incoming node traffic to certain specifications which mean that only transmitted network application data is filtered.

Answer For The Fourth Question

4. What is used to verify a functional requirement is met?.......

Answer:Analysis

A functional requirement defines a function of a system or its component, where a function is described as a specification of behavior between outputs and inputs

Use cases, entity relationship diagrams, and other models are built to validate the requirement by analyst.

Analysis is the verification of a product or system using models, calculations and testing equipment. Analysis allows someone to make predictive statements about the typical performance of a product or system based on the confirmed test results of a sample set or by combining the outcome of individual tests to conclude something new about the product or system.

Answer For The Fifth Question

5. Routers can be set up at the boundary between the internet and a system .........

Answer:True ,why?

The router is the gateway between the Internet and your home network.The main purpose of a router is to connect multiple networks and forward packets destined either for its own networks or other networks. A router is considered a layer-3 device because its primary forwarding decision is based on the information in the layer-3 IP packet, specifically the destination IP address.