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NEW QUESTION: 1
How can you ensure that instance in an VPC does not use AWS DNS for routing DNS requests. You want to use your own managed DNS instance. How can this be achieved?
Please select:
A. Change the existing DHCP options set
B. Change the subnet configuration to allow DNS requests from the new DNS Server
C. Create a new DHCP options set and replace the existing one.
D. Change the route table for the VPC
Answer: C
Explanation:
Explanation
In order to use your own DNS server, you need to ensure that you create a new custom DHCP options set with the IP of th custom DNS server. You cannot modify the existing set, so you need to create a new one.
Option A is invalid because you cannot make changes to an existing DHCP options Set.
Option C is invalid because this can only be used to work with Routes and not with a custom DNS solution.
Option D is invalid because this needs to be done at the VPC level and not at the Subnet level For more information on DHCP options set, please visit the following url
https://docs.aws.amazon.com/AmazonVPC/latest/UserGuideA/PC DHCP Options.html The correct answer is: Create a new DHCP options set and replace the existing one. Submit your Feedback/Queries to our Experts

NEW QUESTION: 2
You work as the Project Manager for company.com Inc. You need to migrate from your current Project Server version to Project Server 2010. Hence, you want to create a backup of the Project Web Access databases. You can use the backup and restore operation through the SharePoint Central Administration Web site or what other method to accomplish the task?
A. Copy the file structure to disk imaging software.
B. RAID 1 redundancy
C. T_SQL_BACKUP command
D. Back up the entire disk drive through RAID 5.
Answer: C
Explanation:
You can use either the backup and restore operations or the T_SQL_BACKUP command to create a backup of the Project Web Access databases. Answer option A is incorrect. RAID 1 mirrors the contents of the disks, making a form of
1:1 ratio real time backup. The contents of each disk in the array are identical to that of every other disk in the array. A RAID 1 array requires a minimum of two drives. Although RAID 1's writing process copies the data identically to all drives, a RAID 1 mirror would not be suitable as a permanent backup solution since RAID architecture by design allows for certain failures to take place. RAID 1 does offer fault tolerance, but it is not a backup mechanism. Answer option B is incorrect. Disk imaging can create an image of the disk, but it would only restore the exact same disk image, not the SQL database you are trying to backup. Answer option C is incorrect. RAID-5 supports striped-with-parity. It contains a minimum of three disks. In this disk system, data along with its parity bits is stored across multiple disks. When a file is written to a RAID-5 volume, the file splits to all the disks in the set excluding the final disk. The final disk contains the parity information. This parity information allows the disks in the array to keep functioning, in case a disk in the set fails. Due to data redundancy, RAID-5 provides fault tolerance. RAID 5 offers fault tolerance through stripe sets with parity, but it is not a backup option. What is RAID? RAID is described as a redundant array of inexpensive disks. It is a technology that allows computer users to achieve high levels of storage reliability from low-cost and less reliable PC- class disk-drive components, via the technique of arranging the devices into arrays for redundancy. RAID is now used as an umbrella term for computer data storage schemes that can divide and replicate data among multiple hard disk drives. The different schemes/architectures are named by the word RAID followed by a number, as in RAID 0, RAID 1, etc. Various designs of RAID involve two key design goals: increased data reliability or increased input/output performance. When multiple physical disks are set up to use RAID technology, they are said to be in a RAID array. This array distributes data across multiple disks, but the array is seen by the computer user and operating system as one single disk. RAID can be set up to serve several different purposes.

NEW QUESTION: 3
Which two options best describe the purpose of session ID and cookie field in a L2TPv3 packet?
A. The session ID is a 32-bit locally significant field used to identify the call on the destination or egress tunnel endport. The session ID will be negotiated by the control connection or statically defined if using the L2TP v3 data plane only.
B. The cookie is a 32-bit locally significant field used to identify the call on the destination or egress tunnel endpoint. The cookie will be negotiated by the control connection or statically defined if using the L2TPv3 data plane only
C. The session ID is a variable length (with a maximum of eight bytes), word-aligned optional field. The control connection can negotiate this as an additional level of guarantee beyond the regular cookie lookup to make sure that a data message has been directed to the correct session or that any recently reused cookie will not be misdirected.
D. The cookie is a variable length (with a maximum of eight bytes),word-aligned optional field. The control connection can negotiate this as an additional level of guarantee beyond the regular session ID lookup to make sure that a data message has been directed to the correct session or that any recently reused session ID will not be misdirected.
Answer: A,D
Explanation:
Session ID:
The 32-bit nonzero session ID carried in the data message header is used to associate
incoming data messages with a particular local attachment circuit. Note that one L2TPv3
session corresponds to one pseudowire.
Cookie:
Following the session ID is an optional variable length random cookie value (maximum 64 bits). This cookie value can be used in addition to the session ID and adds an extra level of assurance that the incoming data messages are correctly associated with the local attachment circuit. Furthermore, a randomly chosen cookie provides protection against blind insertion attacks. That is, an attacker would find it very difficult, if not impossible, to insert packets into a data stream (pseudowire) if the attacker is unable to sniff packets transiting the network between peer LCCEs. This is because of the difficulty of guessing the correct cookie value (0 to 264 if the cookie is 64 bits in length).

NEW QUESTION: 4
HOTSPOT





Answer:
Explanation:

* getElementById
The getElementById() method accesses the first element with the specified id. We use it to get a reference to the canvas.
* context.fillStyle.
Example:
Define a red fill-color for the rectangle:
JavaScript:
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.fillStyle="#FF0000";
ctx.fillRect(20,20,150,100);
Reference: HTML canvas fillStyle Property