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NEW QUESTION: 1
---
You need to write a method that retrieves data from a Microsoft Access 2013 database. The method must meet the following requirements:
Be read-only.
Be able to use the data before the entire data set is retrieved.
Minimize the amount of system overhead and the amount of memory usage.
Which type of object should you use in the method?
A. DbDataAdapter
B. DataContext
C. OleDbDataReader
D. SqlDataAdapter
Answer: C
Explanation:
OleDbDataReader Class
Provides a way of reading a forward-only stream of data rows from a data source.
Example:
OleDbConnection cn = new OleDbConnection();
OleDbCommand cmd = new OleDbCommand();
DataTable schemaTable;
OleDbDataReader myReader;
//Open a connection to the SQL Server Northwind database.
cn.ConnectionString = "Provider=SQLOLEDB;Data Source=server;User ID=login;
Password=password;Initial Catalog=Northwind";

NEW QUESTION: 2
Where do you find the tnsnames.ora for your Autonomous Data Warehouse (ADW) database?
A. The ADW database will place the tnsnames.ora file in an object storage bucket
B. The tnsnames.ora file is included in credentials.zip file that you download from service console of ADW
C. You can download tnsnames.ora from Oracle Cloud Infrastructure web console under ADW details page
D. You are automatically prompted to download the tnsnames.ora file upon creation of the ADW database
Answer: B
Explanation:
Explanation
https://docs.oracle.com/en/cloud/paas/autonomous-data-warehouse-cloud/user/connect-intorduction.html#GUID To download client credentials from the Autonomous Transaction Processing Service Console:
- From the Service Console click the Administration link.
- Click Download Client Credentials (Wallet).
- On the Download Client Credentials (Wallet) page, enter a wallet password in the Password field and confirm the password in the Confirm Password field. The password must be at least 8 characters long and must include at least 1 letter and either 1 numeric character or 1 special character. This password protects the downloaded Client Credentials wallet.
- Click Download to save the client security credentials zip file. By default the filename is:
Wallet_databasename.zip. You can save this file as any filename you want. You must protect this file to prevent unauthorized database access.
The zip file includes the following:
tnsnames.ora and sqlnet.ora: Network configuration files storing connect descriptors and SQL*Net client side configuration.
cwallet.sso and ewallet.p12: Auto-open SSO wallet and PKCS12 file. PKCS12 file is protected by the wallet password provided in the UI.
keystore.jks and truststore.jks: Java keystore and truststore files. They are protected by the wallet password provided while downloading the wallet.
ojdbc.properties: Contains the wallet related connection property required for JDBC connection. This should be in the same path as tnsnames.ora.

NEW QUESTION: 3
In which two ways does a Pardot prospect sync with a Salesforce Lead or Contact record? (Choose two
answers.)
A. Shared Assigned User ID
B. Shared Contact or Lead ID
C. Shared email address
D. Shared tracking pixel
Answer: B,C

NEW QUESTION: 4
Refer to exhibit.

What are two reasons for IP SLA tracking failure? (Choose two )
A. The destination must be 172.30.30.2 for icmp-echo
B. The default route has wrong next hop IP address
C. The threshold value is wrong
D. A route back to the R1 LAN network is missing in R2
E. The source-interface is configured incorrectly
Answer: C,D
Explanation:
Explanation
Timeout (in milliseconds) sets the amount of time an IP SLAs operation waits for a response from its request packet. In other words, the timeout specifies how long the router should wait for a response to its ping before it is considered failed.Threshold (in milliseconds too) sets the upper threshold value for calculating network monitoring statistics created by an IP SLAs operation. Threshold is used to activate a response to IP SLA violation, e.g. send SNMP trap or start secondary SLA operation. In other words, the threshold value is only used to indicate over threshold events, which do not affect reachability but may be used to evaluate the proper settings for the timeout command.
For reachability tracking, if the return code is OK or OverThreshold, reachability is up; if not OK, reachability is down.
This
tutorial can help you revise IP SLA tracking topic:
http://www.firewall.cx/cisco-technical-knowledgebase/cisco-routers/813-cisco-router-ipsla-basic.html and
http://www.ciscozine.com/using-ip-sla-to-change-routing/
Note: Maybe some of us will wonder why there are these two commands:
R1(config)#ip route 0.0.0.0 0.0.0.0 172.20.20.2 track 10 R1(config)#no ip route 0.0.0.0 0.0.0.0 172.20.20.2 In fact the two commands:
ip route 0.0.0.0 0.0.0.0 172.20.20.2 track 10 ip route 0.0.0.0 0.0.0.0 172.20.20.2 are different. These two static routes can co-exist in the routing table. Therefore if the tracking goes down, the first command will be removed but the second one still exists and the backup path is not preferred. So we have to remove the second one.

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