A security analyst received an after-hours alert indicating that a large number of accounts with the suffix "admin'' were locked out. The accounts were all locked out after five unsuccessful login attempts, and no other accounts on the network triggered the same alert. Which of the following is the BEST explanation for these alerts?

• A.The company has implemented time-of-day restrictions, and this triggered a false positive alert when the administrators tried to log in
• B.The standard naming convention makes administrator accounts easy to identify, and they were targeted for an attack.
• C.The administrator accounts do not have rigid password complexity rules, and this made them easier to crack.
• D.The threshold for locking out administrator accounts is too high, and it should be changed from five to three to prevent unauthorized access attempts.

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A security administrator is given the security and availability profiles for servers that are being deployed.
* Match each RAID type with the correct configuration and MINIMUM number of drives.
* Review the server profiles and match them with the appropriate RAID type based on integrity, availability, I/O, storage requirements. Instructions:
* All drive definitions can be dragged as many times as necessary
* Not all placeholders may be filled in the RAID configuration boxes
* If parity is required, please select the appropriate number of parity checkboxes
* Server profiles may be dragged only once
If at any time you would like to bring back the initial state of the simulation, please select the Reset button.
When you have completed the simulation, please select the Done button to submit. Once the simulation is submitted, please select the Next button to continue.

Correct Answer:

Explanation

RAID-0 is known as striping. It is not a fault tolerant solution but does improve disk performance for read/write operations. Striping requires a minimum of two disks and does not use parity.
RAID-0 can be used where performance is required over fault tolerance, such as a media streaming server.
RAID-1 is known as mirroring because the same data is written to two disks so that the two disks have identical data. This is a fault tolerant solution that halves the storage space. A minimum of two disks are used in mirroring and does not use parity. RAID-1 can be used where fault tolerance is required over performance, such as on an authentication server. RAID-5 is a fault tolerant solution that uses parity and striping. A minimum of three disks are required for RAID-5 with one disk's worth of space being used for parity information. However, the parity information is distributed across all the disks. RAID-5 can recover from a sing disk failure.
RAID-6 is a fault tolerant solution that uses dual parity and striping. A minimum of four disks are required for RAID-6. Dual parity allows RAID-6 to recover from the simultaneous failure of up to two disks. Critical data should be stored on a RAID-6 system.
http://www.adaptec.com/en-us/solutions/raid_levels.html

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Task: Configure the firewall (fill out the table) to allow these four rules:
Only allow the Accounting computer to have HTTPS access to the Administrative server.
Only allow the HR computer to be able to communicate with the Server 2 System over SCP.
Allow the IT computer to have access to both the Administrative Server 1 and Administrative Server 2

Correct Answer:

Use the following answer for this simulation task.
Below table has all the answers required for this question.

firewall rules act like ACLs, and they are used to dictate what traffic can pass between the firewall and the internal network. Three possible actions can be taken based on the rule's criteria:
Block the connection Allow the connection
Allow the connection only if it is secured
TCP is responsible for providing a reliable, one-to-one, connection-oriented session. TCP establishes a connection and ensures that the other end receives any packets sent.
Two hosts communicate packet results with each other. TCP also ensures that packets are decoded and sequenced properly. This connection is persistent during the session.
When the session ends, the connection is torn down.
UDP provides an unreliable connectionless communication method between hosts. UDP is considered a best-effort protocol, but it's considerably faster than TCP.
The sessions don't establish a synchronized session like the kind used in TCP, and UDP doesn't guarantee error-free communications.
The primary purpose of UDP is to send small packets of information.
The application is responsible for acknowledging the correct reception of the dat a. Port 22 is used by both SSH and SCP with UDP.
Port 443 is used for secure web connections? HTTPS and is a TCP port.
Thus to make sure only the Accounting computer has HTTPS access to the Administrative server you should use TCP port 443 and set the rule to allow communication between 10.4.255.10/24 (Accounting) and 10.4.255.101 (Administrative server1) Thus to make sure that only the HR computer has access to Server2 over SCP you need use of TCP port 22 and set the rule to allow communication between 10.4.255.10/23 (HR) and 10.4.255.2 (server2) Thus to make sure that the IT computer can access both the Administrative servers you need to use a port and accompanying port number and set the rule to allow communication between: 10.4.255.10.25 (IT computer) and 10.4.255.101 (Administrative server1)
10.4.255.10.25 (IT computer) and 10.4.255.102 (Administrative server2)

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A black hat hacker is enumerating a network and wants to remain convert during the process.
The hacker initiates a vulnerability scan. Given the task at hand the requirement of being convert, which of the following statements BEST indicates that the vulnerability scan meets these requirements?

• A.The vulnerability scanner is performing an authenticated scan.
• B.The vulnerability scanner is performing banner grabbing.
• C.The vulnerability scanner is performing in network sniffer mode.
• D.The vulnerability scanner is performing local file integrity checks.

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New magnetic locks were ordered for an entire building. In accordance with company policy, employee safety is the top priority.
In case of a fire where electricity is cut, which of the following should be taken into consideration when installing the new locks?

• A.Fault tolerance
• B.Redundancy
• C.Fail safe
• D.Fail secure

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