Certification Questions

Q:

Differentiate a MAC address and an IP address and describe how and when each address type is used in a network?

Answer

A MAC address is a hexadecimal number identifying the physical connection of a host. MAC addresses are said to operate on layer 2 of the OSI model. IP addresses, which can be expressed in binary or decimal format, are logical identifiers that are said to be on layer 3 of the OSI model. Hosts on the same physical segment locate one another with MAC addresses, while IP addresses are used when they reside on different LAN segments or subnets. Even when the hosts are in different subnets , a destination IP address will be converted to a MAC address when the packet reaches the destination network via routing.

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Subject: CCNA

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Q:

John is a system administrator for a renowned travel agency.The agency is planning to upgrade its computer systems to Windows XP Professional.Most of the computers are networked but some computers do not have CD-ROM drives.How can John upgrade the computer systems without CD-ROM drives to Windows XP Professional?

A) can attach a portable tape backup unit to each computer and install the operating system from it. B) can use the windows installer program to push out the operating system.
C) can perfom the installation over a network share. D) can not install windows XP Professional unless he installs a CD-ROM drive in the computer systems that do not have them.
 
Answer & Explanation Answer: C) can perfom the installation over a network share.

Explanation:
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Q:

You are setting up a computer for students to use to practice exercises for their certification exams. You want to configure the computer so that users can boot into both Windows 98 and Windows 2000 Professional. You want to ensure that students can access all drive resources from either operating system. What should you do?

A) Create a single FAT32 partition. B) Create a single NTFS volume.
C) Configure one NTFS volume, and one extended FAT32 partition. D) Configure a dynamic volume.
 
Answer & Explanation Answer: A) Create a single FAT32 partition.

Explanation:
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Q:

You responsible for maintaining an application that was written by a former colleague at XYZ.

 

The application reads from and writes to log files located on the local network. The original author included the following debugging code to facilitate maintenance:

try {
Debug.WriteLine(“Inside Try”);
throw(new IOException());}
catch (IOException e) {
Debug.WriteLine (“IOException Caught”);}
catch (Exception e) {
Debug.WriteLine(“Exception Caught”);}.
finally {
Debug.WriteLine (“Inside Finally”);}
Debug.WriteLine (“After End Try”);

 

Which output is produced by thus code?

A) Inside Try Exception Caught IOException Caught Inside Finally After End Try B) Inside Try Exception Caught Inside Finally After End Try
C) Inside Try IOException Caught Inside Finally After End Try D) Inside Try IOException Caught Inside Finally
 
Answer & Explanation Answer: C) Inside Try IOException Caught Inside Finally After End Try

Explanation:

First the try code runs. Then one single exception, the IOException occurs, not two exceptions.Then the Finally code segments executes. After Finally code bas been executed normal application resumes at the next line after the line that called the error. In this case, the After End Try code runs.

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Q:

You are the database administrator of a SQL Server 2000 computer. The server contains your company's Accounts database. Hundreds of users access the database each day.Because you have had power interruptions in the past, you want to protect the physical integrity of the Accounts database. You do not want to slow down server operations.What should you do?

A) Create a database maintenance plan to check database integrity and make repairs each night. B) Enable the torn page detection database option for each database.
C) Disablewrite caching on all disk controllers. D) Ensure that write caching disk controllers have battery backups.
 
Answer & Explanation Answer: D) Ensure that write caching disk controllers have battery backups.

Explanation:

The scenario states that power interruptions have occurred in the past. By buying a battery backup solution for the disk controllers the power interruption problem would be prevented.

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Q:

Which layer of the OSI model is associated with LAN switches?

A) The Transport layer. B) The Physical layer.
C) The Network layer. D) The Data Link layer.
 
Answer & Explanation Answer: D) The Data Link layer.

Explanation:
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Filed Under: CCENT

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Q:

What protocol is required by Internet Information Services(IIS), the indexing Service, and Certificate Services?

A) TCP/IP B) NWLink IPX/SPX/NetBIOS Compatible Transport protocol
C) NetBEUI D) RIP Version 2 for Internet Protocol
 
Answer & Explanation Answer: A) TCP/IP

Explanation:

When you think Internet (or anything Internet - related), think TCP/IP

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Q:

Explain Data Definition Language

Answer

Data Definition Language (DDL):- are the SQL statements that define the database structure.


Example:



  1.  CREATE

  2.  ALTER

  3.  DROP

  4.  TRUNCATE

  5.  COMMENT

  6.  RENAME

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