What causes a buffer overflow CCNA?

Explanation: By sending too much data to a specific area of memory, adjacent memory locations are overwritten, which causes a security issue because the program in the overwritten memory location is affected.

What causes a buffer overflow?

A buffer overflow (or buffer overrun) occurs when the volume of data exceeds the storage capacity of the memory buffer. As a result, the program attempting to write the data to the buffer overwrites adjacent memory locations.

Which condition describes the potential threat created by instant on in a data center *?

Which condition describes the potential threat created by Instant On in a data center? Explanation: The phrase Instant On describes a potential threat to a VM when it is brought online after it has not been used for a period of time.

Which type of software typically uses a network adapter card in promiscuous mode to capture all network packets that are sent across a LAN?

Port redirection attacks use a network adapter card in promiscuous mode to capture all network packets that are sent across a LAN. B. Password attacks can be implemented using brute-force attack methods, Trojan Horses, or packet sniffers.

How do I know if my interface is in promiscuous mode?

To set an interface to promiscuous mode you can use either of these commands, using the 'ip' command is the most current way. To identify if the NIC has been set in Promiscuous Mode, use the ifconfig command.

How do I disable promiscuous mode?

Disable Promiscuous Mode

1. To disable promiscuous mode on the physical NIC, run the following command on the XenServer text console: # ifconfig eth0 –promisc.
2. Run the ifconfig command again and notice that promiscuous mode is now disabled.

What is a firewall and why is it used?

Firewalls provide protection against outside cyber attackers by shielding your computer or network from malicious or unnecessary network traffic. Firewalls can also prevent malicious software from accessing a computer or network via the internet.

What are the three core components of the Cisco Secure Data Center solution?

What are the three core components of the Cisco Secure Data Center solution? (Choose three.)

• mesh network.
• secure segmentation.
• visibility.
• threat defense.
• servers.
• infrastructure.

Which Cisco network security tool is a cloud based service that provides alerts to network professionals about current network attacks?

The Cisco Security Intelligence Operations (SIO) arrived in 2010 and is a cloud-based service that connects global threat information, reputation-based services, and sophisticated analysis to Cisco network security devices to provide stronger protection with faster response times.

What is one way to prevent a buffer overflow?

You can prevent a buffer overflow attack by auditing code, providing training, using compiler tools, using safe functions, patching web and application servers, and scanning applications.

How common are buffer overflow attacks?

According to MITRE, buffer overflows account for over 10,000 of the known software vulnerabilities, 23% of which are considered severe.

Are buffer overflows still a problem?

Buffer overflows can be exploited by attackers to corrupt software. Despite being well-understood, buffer overflow attacks are still a major security problem that torment cyber-security teams.

Why is the username name algorithm type Scrypt secret password?

Why is the username name algorithm-type scrypt secret password command preferred over the username name secret password command? It uses the SCRYPT algorithm for encrypting passwords.

What three items are components of the CIA triad?

The CIA triad refers to an information security model made up of the three main components: confidentiality, integrity and availability. Each component represents a fundamental objective of information security.

Which packet type is user generated and forwarded by a router?

Explanation: Data plane packets are user generated. Control plane packets and management plane packets are generated by the network devices.

What are the three functional areas defined by the Cisco network foundation protection NFP framework?

Cisco NFP (Network Foundation Protection) defines three planes and they are Management plane, Control plane and Data plane. Management plane: The management plane includes traffic that a network administrator uses to configure network devices.

How are data centers protected?

Barriers. Barriers such as fencing, thick concrete walls, lone-standing retaining walls and underground environments are some of the physical security that data centers can offer. Many facilities will also use landscaping as physical protection from outdoor elements.

What is Cisco Tetration?

If you read the Cisco Tetration site, it states that Tetration offers holistic workload protection for multi-cloud data centers by enabling a zero-trust model using segmentation.

What are the 3 types of firewalls?

Firewall delivery methods

• Hardware-based firewalls. A hardware-based firewall is an appliance that acts as a secure gateway between devices inside the network perimeter and those outside it. ...
• Software-based firewalls. A software-based firewall, or host firewall, runs on a server or other device. ...
• Cloud/hosted firewalls.

Do firewalls protect against viruses?

Host-based firewalls are easy to install and protect your computer from malware, cookies, email viruses, pop-up windows, and more. Along with desktop computers, mobile devices can be installed with firewalls to protect online activity on the go.

Why would a hacker use a proxy server?

Why Would A Hacker Use A Proxy Server? To Create A Stronger Connection With The Target.

Why promiscuous mode is required?

In an Ethernet local area network (LAN), promiscuous mode ensures that every data packet that is transmitted is received and read by a network adapter. This means the adapter does not filter packets. Instead, it passes each packet on to the operating system (OS) or any monitoring application installed on the network.

How do promiscuous and inline modes differ?

In the promiscuous mode, the sensor only receives a copy of traffic or packets but the traffic makes its way to the target destination while in inline mode all the traffic have to be pass through sensor that is placed in inline mode, can monitor or actively block the data before they reach to their target destination ...

What is WIFI promiscuous mode?

In computer networking, promiscuous mode is a mode for a wired network interface controller (NIC) or wireless network interface controller (WNIC) that causes the controller to pass all traffic it receives to the central processing unit (CPU) rather than passing only the frames that the controller is specifically ...

What is type9 password?

Cisco type 9 password

This password type uses Scrypt algorithm. Scrypt was specifically designed to make cracking very difficult even on large-scale cracking rigs with many GPUs or hardware ASICs. This is due to the fact that Scrypt requires large amount of memory to perform its function.