Computer Aptitude > Networking
NETWORKING MIXED MCQs
Total Questions : 66
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Answer: Option D. -> All of the above
Answer: Option D. -> All of these
Answer: Option B. -> Switching hub
Answer: Option D. -> A router that acts both as a bridge and router
Answer: Option D. -> ‘2’ and ‘3’
Answer: Option D. -> All of the above
Answer: Option D. -> 1’ and ‘2’
Answer: Option D. -> `2’ and `3’
Packet filtering is a type of firewall technology used to control the incoming and outgoing traffic of a computer or network. It uses a set of rules to evaluate the header of a packet and decide whether it should be allowed to pass through the firewall or not. Packet filtering firewalls operate at the Network Layer (Layer 3) and the Data Link Layer (Layer 2) of the OSI model.
The OSI model (Open System Interconnection Model) is a seven-layer model that defines how data is transmitted between two computers over a network. It defines the protocols and standards that must be adhered to for successful communication. The seven layers are as follows:
1. Physical Layer: This layer deals with physical aspects of communication such as media, cabling, and signal encoding.
2. Data Link Layer: This layer deals with physical addressing, error control, and data flow control.
3. Network Layer: This layer deals with logical addressing, routing, and the delivery of packets.
4. Transport Layer: This layer deals with the reliable delivery of data between two hosts.
5. Session Layer: This layer establishes, maintains, and terminates connections between two hosts.
6. Presentation Layer: This layer deals with data representation and data conversion.
7. Application Layer: This layer deals with application-specific data and provides an interface for users to access the network.
Packet filtering firewalls are used to control the flow of traffic across a network. They are configured with a set of rules that evaluate the header of each packet and decide whether it should be allowed to pass through the firewall or not. Packet filtering firewalls operate at the Network Layer (Layer 3) and the Data Link Layer (Layer 2) of the OSI model.
Packet filtering firewalls are typically used to control access to a network. They can be used to block unwanted traffic, such as malicious or unwanted applications, or to allow only specific types of traffic to pass through the firewall. Packet filtering firewalls are a cost-effective way to secure a network, as they are relatively easy to configure and maintain.
In conclusion, packet filtering firewalls operate at the Network Layer (Layer 3) and the Data Link Layer (Layer 2) of the OSI model. They are used to control the flow of traffic across a network and can be used to block unwanted traffic or to allow only specific types of traffic to pass through the firewall.
Packet filtering is a type of firewall technology used to control the incoming and outgoing traffic of a computer or network. It uses a set of rules to evaluate the header of a packet and decide whether it should be allowed to pass through the firewall or not. Packet filtering firewalls operate at the Network Layer (Layer 3) and the Data Link Layer (Layer 2) of the OSI model.
The OSI model (Open System Interconnection Model) is a seven-layer model that defines how data is transmitted between two computers over a network. It defines the protocols and standards that must be adhered to for successful communication. The seven layers are as follows:
1. Physical Layer: This layer deals with physical aspects of communication such as media, cabling, and signal encoding.
2. Data Link Layer: This layer deals with physical addressing, error control, and data flow control.
3. Network Layer: This layer deals with logical addressing, routing, and the delivery of packets.
4. Transport Layer: This layer deals with the reliable delivery of data between two hosts.
5. Session Layer: This layer establishes, maintains, and terminates connections between two hosts.
6. Presentation Layer: This layer deals with data representation and data conversion.
7. Application Layer: This layer deals with application-specific data and provides an interface for users to access the network.
Packet filtering firewalls are used to control the flow of traffic across a network. They are configured with a set of rules that evaluate the header of each packet and decide whether it should be allowed to pass through the firewall or not. Packet filtering firewalls operate at the Network Layer (Layer 3) and the Data Link Layer (Layer 2) of the OSI model.
Packet filtering firewalls are typically used to control access to a network. They can be used to block unwanted traffic, such as malicious or unwanted applications, or to allow only specific types of traffic to pass through the firewall. Packet filtering firewalls are a cost-effective way to secure a network, as they are relatively easy to configure and maintain.
In conclusion, packet filtering firewalls operate at the Network Layer (Layer 3) and the Data Link Layer (Layer 2) of the OSI model. They are used to control the flow of traffic across a network and can be used to block unwanted traffic or to allow only specific types of traffic to pass through the firewall.
Answer: Option D. -> protecting against viruses
Firewalls are designed to protect the networks of an organization from unauthorized access, malicious software, and other security threats. Firewalls help to limit security exposures by enforcing the organization’s security policies. They can also be used to log Internet activity and detect any suspicious activity.
However, firewalls are not designed to protect against viruses. Viruses are small pieces of malicious code that are designed to spread from one computer to another. They can cause serious damage to a system, such as deleting files, corrupting data, or causing the system to crash.
In order to protect against viruses, organizations need to use antivirus software which is specifically designed to detect and remove malicious code. Antivirus software works by scanning the system for any suspicious files and then removing them. It can also be configured to regularly scan the system for new viruses and block any malicious code from entering the system.
In summary, firewalls are designed to limit security exposures, log Internet activity, and enforce the organization’s security policy. However, they are not designed to protect against viruses. To protect against viruses, organizations need to use antivirus software.
Relevant Definitions and Formulas:
Firewall: Firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic by analyzing the data packets and determining whether they should be allowed through or not, based on a set of rules and other criteria.
Virus: A virus is a malicious program or piece of code that is designed to replicate itself on multiple computers and networks. It can cause damage to a system, corrupt data, or delete files.
Antivirus Software: Antivirus software is a type of software program that is designed to detect and remove viruses and other malicious code from a computer or network. It works by scanning the system for any suspicious files and then removing them.
Firewalls are designed to protect the networks of an organization from unauthorized access, malicious software, and other security threats. Firewalls help to limit security exposures by enforcing the organization’s security policies. They can also be used to log Internet activity and detect any suspicious activity.
However, firewalls are not designed to protect against viruses. Viruses are small pieces of malicious code that are designed to spread from one computer to another. They can cause serious damage to a system, such as deleting files, corrupting data, or causing the system to crash.
In order to protect against viruses, organizations need to use antivirus software which is specifically designed to detect and remove malicious code. Antivirus software works by scanning the system for any suspicious files and then removing them. It can also be configured to regularly scan the system for new viruses and block any malicious code from entering the system.
In summary, firewalls are designed to limit security exposures, log Internet activity, and enforce the organization’s security policy. However, they are not designed to protect against viruses. To protect against viruses, organizations need to use antivirus software.
Relevant Definitions and Formulas:
Firewall: Firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic by analyzing the data packets and determining whether they should be allowed through or not, based on a set of rules and other criteria.
Virus: A virus is a malicious program or piece of code that is designed to replicate itself on multiple computers and networks. It can cause damage to a system, corrupt data, or delete files.
Antivirus Software: Antivirus software is a type of software program that is designed to detect and remove viruses and other malicious code from a computer or network. It works by scanning the system for any suspicious files and then removing them.
Answer: Option D. -> ‘1’ and `2’
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