Shared Flashcard Set

Details

3DX5X Vol II
3DX5X Vol 2
124
Computer Networking
Post-Graduate
12/29/2012

Additional Computer Networking Flashcards

 


 

Cards

Term
What layer of the Open System Interconnect model defines the electrical, mechanical, procedural, and functional specifications for links between communicating network systems?
Definition
Physical.
Term
The Institute of Electrical and Electronics Engineers divide the Open System Interconnect Data Link Layers into what two sublayers?
Definition
Logical Link Control and Media Access Control.
Term
At what Open System Interconnect layer do network switches and bridges operate?
Definition
Data Link.
Term
At what Open System Interconnect layer do routers operate?
Definition
Network.
Term
At what Open System Interconnect layer are common data compression and encryption schemes used?
Definition
Presentation.
Term
What Open System Interconnect layer is closest to the end user?
Definition
Application
Term
What is a formal set of rules and conventions that govern how computers exchange information over a network medium?
Definition
Protocol.
Term
What topology defines the layout of a network’s devices and media?
Definition
Physical
Term
What topology defines the way in which devices communicate, and data is transmitted, throughout the network?
Definition
Logical
Term
What topology consists of devices connected to a common, shared cable?
Definition
Bus
Term
What topology consists of cable segments from each computer connected to a centralized component?
Definition
Star
Term
What topology combines two or more different physical topologies in a single network?
Definition
Hybrid
Term
Which network protocol has the Department of Defense chosen as its standard to govern the flow of information?
Definition
Transport Control Protocol/Internet Protocol.
Term
What Transmission Control Protocol/Internet Protocol network layer protocol provides the service of matching a known IP address for a destination device to a Media Access Control address?
Definition
Address Resolution Protocol.
Term
What Transmission Control Protocol/Internet Protocol network layer protocol provides the IP address for a device that knows its own MAC address?
Definition
Reverse Address Resolution Protocol
Term
What Transmission Control Protocol/Internet Protocol network layer protocol provides messaging that can help with troubleshooting?
Definition
Internet Control Message Protocol.
Term
What Transmission Control Protocol/Internet Protocol transport layer protocol provides reliable data delivery services?
Definition
Transmission Control Protocol
Term
What application within Transmission Control Protocol/Internet Protocol is used to send and receive files via TCP?
Definition
File Transfer Protocol.
Term
What type of network connects networks that are typically separated by geographical distances between cities, states, countries, or around the world?
Definition
Wide Area Network.
Term
What type of network makes use of tunneling and security protocols to enables a group of two or more computer systems to communicate over the public Internet?
Definition
Virtual Private Network.
Term
Which is a common port that contains Hyper Text Transfer Protocol servers and proxies?
Definition
Port 8080.
Term
How many bits are in an IPv4 address?
Definition
32 bits
Term
Instead of using binary, how are IPv4 addresses expressed to be more user-friendly?
Definition
Dotted Decimal Notation.
Term
Using a range of 1–126 in the first octet of an IPv4 address, what class does it belong to?
Definition
Class A.
Term
What IPv4 class address is used for networks with about 250 nodes?
Definition
Class C.
Term
What IPv4 class address is used for multicast addressing?
Definition
Class D.
Term
What IPv4 reserved address is used for loop back?
Definition
127.0.0.1
Term
What is a mechanism that allows a network device to divide an IP address into a network and host number?
Definition
Subnet mask
Term
What is the default classful subnet mask on class B networks?
Definition
255.255.0.0
Term
What method borrows bits from the host field of an IP address to create a subnet?
Definition
Classless Inter-Domain Routing.
Term
Instead of using binary, how are IPv6 addresses expressed to be more user-friendly?
Definition
Colon Hexadecimal Format.
Term
What notation is expressed in leading zero compression for IPv6?
Definition
1234:1234:0:0:1234:0:0:1234.
Term
What notation is expressed in zero compression for IPv6?
Definition
10AB::3:0:1234:5678.
Term
What Unicast address scope operates within a network segment, and will not originate from, or be destined to, an interface that requires a router to direct traffic?
Definition
Link-local
Term
What Unicast address scope is designed to be private, internally routable addresses that do not route outside the site?
Definition
Site-local.
Term
What Unicast address scope is publicly accessible with the Network ID portion of the address broken up into different areas allowing for hierarchical design and allocation?
Definition
Aggregatable Global.
Term
The computing part of the computer is the central processing unit, also called the
Definition
microprocessor.
Term
What two main components make up the central processing unit?
Definition
Control unit and arithmetic logic unit.
Term
What is the type of memory that retains data after power is removed or lost?
Definition
Nonvolatile.
Term
Which landline transmission medium is the primary carrier of voice communications?
Definition
Twisted pair cable.
Term
An optical communications system is comprised of a
Definition
transmitter, cable, and receiver
Term
Which of the following is not one of the three advantages to using wireless technology?
Definition
Safety.
Term
The ability to move about without being tethered by wires in wireless technology is called
Definition
mobility
Term
Which of the following is not one the four security threats to Wireless Local Area Network?
Definition
Direct Connections
Term
Who is an authorized client that may unknowingly or maliciously help outside parties gain access to a network?
Definition
Employee.
Term
What organization developed several wireless standards to meet the demands of security, speed, and flexibility of today’s wireless networks?
Definition
Institute of Electrical Electronics Engineers.
Term
How many peripherals can a Universal Serial Bus handle at once?
Definition
127
Term
How many devices can connect to a FireWire bus?
Definition
63
Term
What do you apply across Liquid Crystal Display material to change the alignment and light polarizing property?
Definition
Voltage
Term
What is a Data Link layer network device that logically separates a single network into two segments or collision domains in Ethernet networks?
Definition
Bridge.
Term
What rule establishes the percent of data that should be local to a segment and the percentage of data that should be destined to traverse a bridge to the other segment?
Definition
80/20 rule
Term
This type of bridge is used to convert one Data Link layer protocol to another
Definition
Translational.
Term
What is the method called when the entire frame is received and placed into the buffer, an error check is performed, and the frame is sent to the proper port for delivery?
Definition
Store-and-forward
Term
What forwarding method is also known as runtless switching?
Definition
Fragment-free.
Term
What layer of the open system interconnection model do routers operate?
Definition
Layer 3.
Term
What do routing algorithms initialize and maintain to aid the process of path determination?
Definition
Routing tables
Term
Which of these is an example of an Exterior Gateway Protocol?
Definition
Border Gateway Protocol.
Term
Dynamic routing automatically calculates the best path between how many nodes?
Definition
2.
Term
What encryption device may you rarely see due to its lower maximum data rate?
Definition
TSEC/KIV–7.
Term
What encryption device is certified to secure all classification levels and categories and is able to encrypt trunk-level high-speed circuits?
Definition
TSEC/KIV–19
Term
What encryption device is capable of loading up to 500 keys?
Definition
AN/CYZ–10 /DTD
Term
The classification of a fill device is
Definition
classified as soon as a key is loaded, and holds the classification of the loaded key
Term
A modem is a device that modulates
Definition
digital data onto an analog carrier for transmission over an analog medium.
Term
Analog modems are used over the voice band range of
Definition
20 Hz to 20 kHz
Term
The main function of the Data Service Unit is to
Definition
adapt the digital data stream produced by the customer equipment to the signaling standards of
Term
Software is generally divided into
Definition
systems software, operating systems software, and applications software.
Term
Which one is not a category of the operating system’s task categories?
Definition
Troubleshoot interface
Term
The path between the operating system and virtually all hardware not on the computer’s motherboard goes through a special program called a
Definition
driver
Term
The core operating-system function is the management of the computer system which resides with the
Definition
kernel.
Term
Applications are software programs designed to perform what type of tasks?
Definition
specific
Term
What are two anti-virus programs that the Air Force uses?
Definition
Norton and McAfee.
Term
Windows operating systems traditionally function in one of two network models. Which model does not operate using centralized user accounts?
Definition
Workgroup.
Term
Which system provides support for features such as Windows System Resource Manager and Metadirectory Services?
Definition
Enterprise Edition
Term
One of the Windows Server Editions operating systems provides support for high-end, high traffic applications servers. Which Operating system is it?
Definition
Datacenter Edition.
Term
What was the first disk operating system developed to operate on a wide range of computer systems?
Definition
UNIX.
Term
What is the name of the standard all-purpose shell most commonly used?
Definition
Bourne shell.
Term
What directory is always identified by the slash symbol (/) and is in the “a” partition?
Definition
root.
Term
Which pathnames begin at the current working directory?
Definition
Relative.
Term
This component of the Global Information Grid consists of those items that are necessary to directly connect the warfighter to the global network
Definition
Warrior component.
Term
This characteristic of the Global Information Grid ensures seamless transmission of information between different service branches
Definition
Common policy and standards.
Term
Who bears the responsibility for maintenance of the sustaining base portion of the Defense Information System Network?
Definition
The service that owns the installation
Term
Which segment of the Defense Information System Network (DISN) may be a person in the deployed Area of Responsibility or a person sitting in a fixed location thousands of miles from combat?
Definition
Sustaining base
Term
What is the difference between a hub router and a premise router?
Definition
Interconnected via the Defense Information Systems Agency Asynchronous Transfer Mode network
Term
How are non-internet protocols sent across the Secret Internet Protocol Router Network?
Definition
Encapsulated by the internet protocol before being transmitted across the SIPRNET.
Term
Which is an internet protocol encryption device that can be directly connected to Red local area networks?
Definition
KG–84
Term
What provides conduit for Joint Worldwide Intelligence Communication System data transmission from one location to another?
Definition
DISN backbone.
Term
What concerns slowed the military’s adoption of wireless network technology?
Definition
Security and reliability.
Term
What is the first step in merging voice, data and video networks into one integrated network within the Air Force?
Definition
Integrating traditional TDM switches with voice over IP systems
Term
Besides limiting connections to the Global Information Grid, what other Combat
Definition
Eliminating the MAJCOM NOSC concept and integrating the functions into two Integrated NOSCs
Term
Which organization is responsible for the design, acquisition, and single systems management of the Defense Switched Network?
Definition
Defense Information Systems Agency.
Term
How is responsiveness provided in the Defense Switched Network?
Definition
The DSN offers precedence access thresholding.
Term
What type of Defense Switched Network precedence call cannot be preempted?
Definition
Flash Override
Term
What is the maximum asynchronous data rate for the Defense Red Switch Network (DRSN)?
Definition
19.2 Kbps.
Term
While you are using the Red Switch, what feature lets you know that you have dialed the correct number at the proper level of security?
Definition
Liquid crystal display
Term
What is the purpose of the standardized tactical entry point terminal?
Definition
To provide a foxhole to National Command Authority link for commanders
Term
The Global Positioning System program is responsible for maintaining GPS time to within how many seconds of universal time code?
Definition
1 microsecond
Term
Which security program is covered under AFI 10–701?
Definition
OPSEC.
Term
Which of the following security programs is defined as a process of identifying critical information and subsequently analyzing friendly actions attendant to military operations and other activities?
Definition
OPSEC.
Term
Providing a list of where and why the information will be disclosed outside the DOD best describes which mandatory item of a Privacy Act Statement?
Definition
Routine use
Term
What form is used as a cover sheet to protect Privacy Act material?
Definition
AF Form 3227.
Term
Guidance for posting information on Air Force web sites is outlined in
Definition
AFI 33–129
Term
Official guidance on individual security clearances and permitting access to classified information can be found in
Definition
AFI 31–501
Term
Disclosure of information that would result in the loss, misuse, modification or unauthorized access that might adversely affect national security would best be described as
Definition
sensitive but unclassified.
Term
What is the COMSEC program designed to do?
Definition
Detect and correct procedural weaknesses that could expose critical information.
Term
What reference would you use for guidance on Air Force messaging?
Definition
AFI 33–119.
Term
Which form is used with a transfer report to accompany a COMSEC package?
Definition
SF 153.
Term
Which form is used as a visitor register log to record visitors into restricted areas?
Definition
AF Form 1109.
Term
An uninvestigated or unevaluated occurrence that potentially jeopardizes the security of COMSEC material or the secure transmission of government information is best described as a COMSEC
Definition
incident.
Term
Which organization assigns communication security incident report case numbers?
Definition
Air Force Communications Agency.
Term
Final reports of a communication security incident are due
Definition
30 days after the initial report is issued.
Term
The Air Force Information Assurance Program is detailed in
Definition
AFI 33–200.
Term
Which applied discipline applies measures and controls to protect data in computer systems against unauthorized, disclosure, modification, or destruction?
Definition
COMPUSEC.
Term
What best describes an unintended signals or noise appearing external to a piece of communications equipment?
Definition
Emanation
Term
An unclassified term referring to technical investigations for compromising emanations from electrically operated data processing equipment is known as
Definition
Telecommunications Electronic Material Protected from Emanating Spurious Transmissions.
Term
Which condition exists when there is no apparent terrorist activity against computer networks?
Definition
INFOCON 5
Term
Which condition requires the mandate of increased monitoring of all network system activities when an increased risk of attack is present?
Definition
INFOCON 4
Term
When a risk of a network system attack has been identified, which condition requires all unclassified dial-up connections be disconnected?
Definition
INFOCON 3
Term
Which condition permits non-essential networks to be taken offline and substituted with alternate methods of communication?
Definition
INFOCON 2
Term
At which NETOPS level is responsibility for the worldwide management and operational oversight of the defense information infrastructure globally managed?
Definition
Tier 1
Term
At what level do regional operation centers perform Network Operations (NETOPS) to ensure operational and administrative control by implementing Systems and Network Management Information Assurance/Network Defense (IA/NetD), and Information Dissemination Management?
Definition
Tier 2
Term
An accreditation decision which allows a system to operate in an environment for which it was originally intended is known as
Definition
a full accreditation.
Term
Which resources designated priority is provided when the level of security requires a significant degree of deterrence against hostile acts?
Definition
“B”.
Term
Which resources designated priority is provided when the level of security requires a reasonable degree of deterrence against hostile acts?
Definition
“C”
Term
Which form would you use to properly label removable storage media containing “confidential” information?
Definition
SF 708.
Supporting users have an ad free experience!