3D052 - Vol2 - Self Help
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Created by:
gatorfamily27 on March 4, 2012
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102 terms
Terms | Definitions |
|---|---|
 What is the first job of the BIOS at stystem startup? | Run the power-on self-test (POST) |
| What does the CMOS store and what other component uses this information? | The configuration information about the computer; BIOS |
| How is main memory distinguished from secondary memory? | By the speed between the main and secondary memory |
| When power is removed from the computer, what happens to the stored information in ROM? | Its contents remain in memory |
| Why is RAM considered as volatile memory? | Because the contents are erased from memory |
| How are dynamic RAM and static RAM different? | DRAM chips must be refreshed constantly or they lose their contents. SRAM chips will hold their data w/o needing to be refreshed as long as power is supplied. |
| What is cache memory and what is normally stored in it? | Temp Storage area; a collection of data duplicating original values |
| What is the main goal of buffers? | to temp hold data used by some type of hardware device until the device is ready to utilize the data |
| What is the purpose of the DMA controller? | To move data and to freeing up the CPU to process data |
| Define an interrupt. | 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 |
| How are interrupts commonly used? | for computer multitasking, especially in real-time computing |
| What is parity? | a method in which the computer ensures the data it processes is accurate |
| What is the difference between error correction code (ECC) memory and the parity method? | the parity method can only detect an error while ECC memory can both detect and correct errors |
| 3 examples of storage devices that can be placed in a SAN | Disk Arrays, CD/DVD towers, tapelibraries |
| How can using a SAN make equipment failure easier to repair? | the data does not need to be affected; you can replace only the server |
| What are the 3 protocols listed that support a SAN? | Fibre Channel, ATA overEthernet, iSCSI |
| How does SAN and a NAS differ? | a SAN appears to the server to be physically attached; the NAS is treated as a network drive |
| What are the 3 concepts of RAID? | Mirroring, striping, and error correction |
| Why is RAID 5 considered to be more efficient when it comes to parity checks? | because you do not need separate harddrives for parity checks |
| What are "nested RAID arrays"? | because one array type is "nested" within anothr array type |
| What is machine code? | Instructions written or existing in a form acceptable by a computer |
| What is the distinction of an interpreted language? | No permanent object code is produced |
| What are some characteristics of HOL? | -Use English-like statements to increase user understanding -Nearly self-documenting -Permit the use of most scientific and Mathematic notations |
| Name four HOLS. | FORTRAN COBOL Ada Pascal |
| What are some characteristics of assembler language. | Programmer writes mnemonics, which are converted directly to machine language by a language processor (machine specific) |
| What is the European Organization for Nuclear Research commonly known as? | CERN - world's largest particle physics lab |
| How would you best describe a URL? | the address of a file or resource accessible on the internet |
| What is HTML? | Set of markup symbols or codes inserted in a file intended for display on a web browser page |
| What significant role with XHTML play in the future? | most likely to succeed HTML for internet purposes |
| Describe CGI. | 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 |
| What is session management? | the process of keeping track of a user's activity across sessions of interaction with th ecomputer system |
| Why is session management useful when using the internet? | with out it, you would have to re-authenticate yourself every time you clicked on a hyperlink, rendering internet almost useless for secure communication |
| Example of session management used for security | session being terminated for inactivity and user having to reauthenticate to get back to site |
| What are the methods of optimizing your system? | task manager, disk defrag, ckdsk, disk quotas |
| What triggers can you set the task manager to launch a program on? | daily, weekly, monthly, one time only, computer stars up, log on |
| How can you best describe a radix and what does it indicate? | "base" and it indicates the number of digits used in a particualr numbering system |
| what is an exponent and what does it indicate? | written superscript and it indicates how many times a number is to multiplied by itself |
| Explain the difference between the most and least significant digits | MSD - left most nonzero digit (greatest possible value) LSD - right most digit and includes zeros |
| whatis the purpose of fractional point? | the point that separates the whole portion of the number from the fractional portion of a number |
| From an IT contingency planning perspective, what are the two primary functions of risk management? | 1. identify threats and vulnerabilities 2. identify residual risks |
| 3 main classifications of threat | Natural, human, environmental |
| Describe a COOP | restores organizational essential fucntions at an alternate site for up to 30 days |
| What should a contingency plan spell out? | systems prioritized in what order to protect them and for bringing them back online |
| What criteria should you consider when selecting an offsite storage facility? | Geographic area, accessibility, security, environment and cost |
| 5 types of alternate sites | cold, warm, hot, mobile, mirrored |
| Why should you focus most of your backup efforts on data instead of programs? | date is unique and software can always be reloaded |
| What 3 factors is the choice of back media based on? | size, cost, speed |
| 4 different types of backup you can schedule | Full (AKA Normal), differential, incremental, daily |
| Why should you keep a copy of your backups at an alternate site? | problem or damage only effects the primary site |
| What is the key to understanding AD? | Understanding AD structural terms |
| What may be contained within objects? | network users, computers, printers, groups, data files, applications |
| Why is the global catalog server a critical component in a domain? | it has a "master list" of all AD objects from all domains in the forest |
| What are GPOs applied against? | "Leaf objects" such as users and computers but not security or distribution groups |
| Which command do you use to launch the AD Installation Wizard to prote a server to a domain controller? | DCPROMO |
| When can a command line interface be better than a GUI? | Uses less RAM and less power from the microprocessor than any other interface |
| What is the biggest advantage of a GUI? | most user friendly |
| What are 4 elements most GUIs are composed of? | Windows, Icons, Menus, Pointing devices |
| What are the 2 methods of installing Windows Server 2003? | attended and unattended |
| What is the difference between a hot fix and a service pack? | hotifx- program to quickly fix a specific problem Service Pack - collection of fixes |
| How are a forward lookup and a reverse lookup different? | forward - you provide domain name and request an IP reverse - you specify an IP address and it gives you the hostname |
| How do recursive queries and non-recursive queries differ? | recursive - made by client applications non-recursive - made by name servers to other name server |
| Explain the importance, in DNS, of the "root". | root consists of 13 name server clusters located world wide. These servers form the upper most layer of the DNS name space |
| What 3 things must AF DNS servers do? | Provide reverse lookup capa. Allow zone transfers between primary and secondary NS Run only the DNS service |
| What does DHCP server do? | Manages a pool of IP addresses available for lease by authorized clients for a specific period of time |
| What must you be aware of when using more than one DHCP server on a network? | Make sure each scope is unique so you do not cause the creation of duplicate IP addresses |
| What does AF policy say about using DHCP? | Manage all base IP address space through utilization of DHCP |
| According to AF ploicy, how long should noncritical workstations' IP addresses be leased for? | 30 days |
| On what servers can you install RIS? | any server that meets the Window Server 2003 minimum requirements |
| What directory does the RIS service default to? | /remoteinstall |
| When deciding on a default directory for TIS, what are 2 rules you must follow? | direcotry has to be on a partition other than the partition that holds the OS and must be formatted with NTFS |
| What are the services that IIS can provide? | FTP, SNMP, NNTP, WWW publishing services |
| Why is IIS 6.0 not activated automatically? | reduces number of access points for hackers |
| What are IIS's components? | WWW server, SMTP, NNTP, FTP server, |
| What is usually the sole purpose of installing IIS on an AF server? | to facilitate the installation of Microsoft Exchange Server |
| Explain what a snap-in is | Interface for a program designed to integrate with the MMC |
| As an Administrator, how would MMC make accomplishing your duties easier? | simplifies the management of the server and network |
| What are the 2 places a user account can be created? | on a local computer or a domain controller |
| What is the difference between permissions and rights? | permissions - control access to an object rights - enable a user account or group to perform predefined tasks |
| Where is a domain user accoutn valid? | on any computer in the domain for which the account was created |
| Which snap-in to the MMC would you use to create a new user account? | AD Users and Computers |
| Why would you use group nesting? | to simplify and reduce security management overhead |
| What scopes can apply to special identities? | none - Group scopes do not apply to special identities |
| What do permisisons define? | rules by which operations can be performed on a particular resource |
| What is the only way to secure resources on FAT partitions? | by sharing resources |
| What are the 4 shared folder permissions? | Full control, change read, and no access |
| Which permission over rides all others? | No Access |
| What are the 6 NTFS permissions? | Read, Write, execute, delete, change permissions, take ownership |
| Why would you remove full control permission from the everyone group? | with those permissions, anyone on the network could delete or modify resources |
| What does Microsoft Exchange Server integrate tightly with to provide its many features? | TCP/IP infrastructure provided by Microsoft Windows Server 2003 and AD service |
| What protocols does Exchange server use to support web based mail client connectivity? | HTTP, SMTP, POP3, IMAP4, NNTP |
| What is the core data sotrage repository for Microsfot Exchange server? | Exchange information store service |
| What are the 2 Microsoft Exchange server roles? | Mailbox server & bridgehead server |
| What must the account you use to install the first Exchnage 2003 server in the forest be? | Must be a member of the domain admin group in the local domain and a local computer admin |
| What are data structures designed to do? | Organize data to suit a specific programming purpose |
| What is the purpose of a schema? | describes the objects that are represented in the database and the relationship among them |
| Why do we define a group of ordered data items or elements as a linked list? | b/c we use pointers to connect each element together thus specifying their order |
| How are columns and rows identified in a table? | Columns by name rows by the values appearing in a particular column subset |
| How do base tables and derived talbes differ? | Base - self contained derived - info that was retrieved from another table |
| When referring to databases, what is a view? | a virtual or logical table composed of the result set of a query |
| Descirbe a relational database | 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 |
| What 3 values form the bais of the 3 valued logic used by SQL? | Null, True, False |
| 3 basic types of SQL statements | data, transaction, and schema statements |
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