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3D052 V2 Self Test Questions
Volume 2 Self Test Questions Complete
102
Computer Networking
Professional
04/24/2012

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Cards

Term
What is the first job of the BIOS at stystem startup?
Definition
Run the power-on self-test (POST)
Term
What does the CMOS store and what other component uses this information?
Definition
The configuration information about the computer; BIOS
Term
How is main memory distinguished from secondary memory?
Definition
By the speed between the main and secondary memory
Term
When power is removed from the computer, what happens to the stored information in ROM?
Definition
Its contents remain in memory
Term
Why is RAM considered as volatile memory?
Definition
Because the contents are erased from memory
Term
How are dynamic RAM and static RAM different?
Definition
DRAM chips must be refreshed constantly or they lose their contents.
Term
What is cache memory and what is normally stored in it?
Definition
Temp Storage area; a collection of data duplicating original values
Term
What is the main goal of buffers?
Definition
to temp hold data used by some type of hardware device until the device is ready to utilize the data
Term
What is the purpose of the DMA controller?
Definition
To move data and to freeing up the CPU to process data
Term
Define an interrupt.
Definition
a asynchronous signal from a computer hardware device indicating the need for attention or a synchronous event in a software application program indicating the need for a change in execution
Term
How are interrupts commonly used?
Definition
for computer multitasking, especially in real-time computing
Term
What is parity?
Definition
a method in which the computer ensures the data it processes is accurate
Term
What is the difference between error correction code (ECC) memory and the parity method?
Definition
the parity method can only detect an error while ECC memory can both detect and correct errors
Term
3 examples of storage devices that can be placed in a SAN
Definition
Disk Arrays, CD/DVD towers, tapelibraries
Term
How can using a SAN make equipment failure easier to repair?
Definition
the data does not need to be affected; you can replace only the server
Term
What are the 3 protocols listed that support a SAN?
Definition
Fibre Channel, ATA overEthernet, iSCSI
Term
How does SAN and a NAS differ?
Definition
a SAN appears to the server to be physically attached; the NAS is treated as a network drive
Term
What are the 3 concepts of RAID?
Definition
Mirroring, striping, and error correction
Term
Why is RAID 5 considered to be more efficient when it comes to parity checks?
Definition
because you do not need separate harddrives for parity checks
Term
What are "nested RAID arrays"?
Definition
because one array type is "nested" within anothr array type
Term
What is machine code?
Definition
Instructions written or existing in a form acceptable by a computer
Term
What is the distinction of an interpreted language?
Definition
No permanent object code is produced
Term
What are some characteristics of HOL?
Definition
-Use English-like statements to increase user understanding
Term
Name four HOLS.
Definition
FORTRAN
Term
What are some characteristics of assembler language.
Definition
Programmer writes mnemonics, which are converted directly to machine language by a language processor (machine specific)
Term
What is the European Organization for Nuclear Research commonly known as?
Definition
CERN - world's largest particle physics lab
Term
How would you best describe a URL?
Definition
the address of a file or resource accessible on the internet
Term
What is HTML?
Definition
Set of markup symbols or codes inserted in a file intended for display on a web browser page
Term
What significant role with XHTML play in the future?
Definition
most likely to succeed HTML for internet purposes
Term
Describe CGI.
Definition
standard method for a web server to pass a web user's request to an application program and to exchange data back to the user
Term
What is session management?
Definition
the process of keeping track of a user's activity across sessions of interaction with th ecomputer system
Term
Why is session management useful when using the internet?
Definition
with out it, you would have to re-authenticate yourself every time you clicked on a hyperlink, rendering internet almost useless for secure communication
Term
Example of session management used for security
Definition
session being terminated for inactivity and user having to reauthenticate to get back to site
Term
What are the methods of optimizing your system?
Definition
task manager, disk defrag, ckdsk, disk quotas
Term
What triggers can you set the task manager to launch a program on?
Definition
daily, weekly, monthly, one time only, computer stars up, log on
Term
How can you best describe a radix and what does it indicate?
Definition
"base" and it indicates the number of digits used in a particualr numbering system
Term
what is an exponent and what does it indicate?
Definition
written superscript and it indicates how many times a number is to multiplied by itself
Term
Explain the difference between the most and least significant digits
Definition
MSD - left most nonzero digit (greatest possible value)
Term
whatis the purpose of fractional point?
Definition
the point that separates the whole portion of the number from the fractional portion of a number
Term
From an IT contingency planning perspective, what are the two primary functions of risk management?
Definition
1. identify threats and vulnerabilities
Term
3 main classifications of threat
Definition
Natural, human, environmental
Term
Describe a COOP
Definition
restores organizational essential fucntions at an alternate site for up to 30 days
Term
What should a contingency plan spell out?
Definition
systems prioritized in what order to protect them and for bringing them back online
Term
What criteria should you consider when selecting an offsite storage facility?
Definition
Geographic area, accessibility, security, environment and cost
Term
5 types of alternate sites
Definition
cold, warm, hot, mobile, mirrored
Term
Why should you focus most of your backup efforts on data instead of programs?
Definition
date is unique and software can always be reloaded
Term
What 3 factors is the choice of back media based on?
Definition
size, cost, speed
Term
4 different types of backup you can schedule
Definition
Full (AKA Normal), differential, incremental, daily
Term
Why should you keep a copy of your backups at an alternate site?
Definition
problem or damage only effects the primary site
Term
What is the key to understanding AD?
Definition
Understanding AD structural terms
Term
What may be contained within objects?
Definition
network users, computers, printers, groups, data files, applications
Term
Why is the global catalog server a critical component in a domain?
Definition
it has a "master list" of all AD objects from all domains in the forest
Term
What are GPOs applied against?
Definition
"Leaf objects" such as users and computers but not security or distribution groups
Term
Which command do you use to launch the AD Installation Wizard to prote a server to a domain controller?
Definition
DCPROMO
Term
When can a command line interface be better than a GUI?
Definition
Uses less RAM and less power from the microprocessor than any other interface
Term
What is the biggest advantage of a GUI?
Definition
most user friendly
Term
What are 4 elements most GUIs are composed of?
Definition
Windows, Icons, Menus, Pointing devices
Term
What are the 2 methods of installing Windows Server 2003?
Definition
attended and unattended
Term
What is the difference between a hot fix and a service pack?
Definition
hotifx- program to quickly fix a specific problem
Term
How are a forward lookup and a reverse lookup different?
Definition
forward - you provide domain name and request an IP
Term
How do recursive queries and non-recursive queries differ?
Definition
recursive - made by client applications
Term
Explain the importance, in DNS, of the "root".
Definition
root consists of 13 name server clusters located world wide. These servers form the upper most layer of the DNS name space
Term
What 3 things must AF DNS servers do?
Definition
Provide reverse lookup capa.
Term
What does DHCP server do?
Definition
Manages a pool of IP addresses available for lease by authorized clients for a specific period of time
Term
What must you be aware of when using more than one DHCP server on a network?
Definition
Make sure each scope is unique so you do not cause the creation of duplicate IP addresses
Term
What does AF policy say about using DHCP?
Definition
Manage all base IP address space through utilization of DHCP
Term
According to AF ploicy, how long should noncritical workstations' IP addresses be leased for?
Definition
30 days
Term
On what servers can you install RIS?
Definition
any server that meets the Window Server 2003 minimum requirements
Term
What directory does the RIS service default to?
Definition
/remoteinstall
Term
When deciding on a default directory for TIS, what are 2 rules you must follow?
Definition
direcotry has to be on a partition other than the partition that holds the OS and must be formatted with NTFS
Term
What are the services that IIS can provide?
Definition
FTP, SNMP, NNTP, WWW publishing services
Term
Why is IIS 6.0 not activated automatically?
Definition
reduces number of access points for hackers
Term
What are IIS's components?
Definition
WWW server, SMTP, NNTP, FTP server,
Term
What is usually the sole purpose of installing IIS on an AF server?
Definition
to facilitate the installation of Microsoft Exchange Server
Term
Explain what a snap-in is
Definition
Interface for a program designed to integrate with the MMC
Term
As an Administrator, how would MMC make accomplishing your duties easier?
Definition
simplifies the management of the server and network
Term
What are the 2 places a user account can be created?
Definition
on a local computer or a domain controller
Term
What is the difference between permissions and rights?
Definition
permissions - control access to an object
Term
Where is a domain user accoutn valid?
Definition
on any computer in the domain for which the account was created
Term
Which snap-in to the MMC would you use to create a new user account?
Definition
AD Users and Computers
Term
Why would you use group nesting?
Definition
to simplify and reduce security management overhead
Term
What scopes can apply to special identities?
Definition
none - Group scopes do not apply to special identities
Term
What do permisisons define?
Definition
rules by which operations can be performed on a particular resource
Term
What is the only way to secure resources on FAT partitions?
Definition
by sharing resources
Term
What are the 4 shared folder permissions?
Definition
Full control, change read, and no access
Term
Which permission over rides all others?
Definition
No Access
Term
What are the 6 NTFS permissions?
Definition
Read, Write, execute, delete, change permissions, take ownership
Term
Why would you remove full control permission from the everyone group?
Definition
with those permissions, anyone on the network could delete or modify resources
Term
What does Microsoft Exchange Server integrate tightly with to provide its many features?
Definition
TCP/IP infrastructure provided by Microsoft Windows Server 2003 and AD service
Term
What protocols does Exchange server use to support web based mail client connectivity?
Definition
HTTP, SMTP, POP3, IMAP4, NNTP
Term
What is the core data sotrage repository for Microsfot Exchange server?
Definition
Exchange information store service
Term
What are the 2 Microsoft Exchange server roles?
Definition
Mailbox server & bridgehead server
Term
What must the account you use to install the first Exchnage 2003 server in the forest be?
Definition
Must be a member of the domain admin group in the local domain and a local computer admin
Term
What are data structures designed to do?
Definition
Organize data to suit a specific programming purpose
Term
What is the purpose of a schema?
Definition
describes the objects that are represented in the database and the relationship among them
Term
Why do we define a group of ordered data items or elements as a linked list?
Definition
b/c we use pointers to connect each element together thus specifying their order
Term
How are columns and rows identified in a table?
Definition
Columns by name
Term
How do base tables and derived talbes differ?
Definition
Base - self contained
Term
When referring to databases, what is a view?
Definition
a virtual or logical table composed of the result set of a query
Term
Descirbe a relational database
Definition
collection of data items organized as a set of formally descirbed tables from which data can be accessed in different ways without having to reorg the database tables
Term
What 3 values form the bais of the 3 valued logic used by SQL?
Definition
Null, True, False
Term
3 basic types of SQL statements
Definition
data, transaction, and schema statements
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