Worksheets3d151 CDC Vol 2 Unit 2
Total questions: 39
Worksheet time: 20mins
What functions do the seven layers of the OSI reference model specify?
Programming
Transport
Network
Data
What layers make up the two categories of the seven layers of the OSI reference model?
Data Transport and Application
Session and Data Transport
Network and Presentation
Application and Session
The logical link control sublayer is a part of which OSI model layer?
Transport
Data link
Physical
Session
What does the logical link control sublayer of the data link layer manage?
Communications between devices over multiple links of a network
Communications between devices over a single link of a network
Protocol access to the physical network medium
Protocol access to the links of a network
What does the media access control sublayer of the data link layer manage?
Communications between devices over multiple links of a network
Communications between devices over a single link of a network
Protocol access to the physical network medium
Protocol access to the links of a network
When used along, the word "topology" often refers to a network's...
Transport topology
Physical topology
Physical medium
Logical topology
What network topology is another name for a bus topology?
Star
Ring
Loop
linear
What topology offers centralized management of a network?
Bus
Star
Ring
Radial
What negative effect could occur when star networks are interconnected?
There are no negative effects
A fault in network cabling will disrupt all communication
Performance will suffer due to the load of the additional devices
When the central node point fails, large portions of the network become isolated
Which governing body is the authority for information technology communications within the Department of Defense and every level of IT communication from the DOD information network to the warfighter under the scope of control?
Defense Information Systems Agency
Federal Communications Commission
Department of Homeland Security
Department of Defense
What is a TCP socket?
Regular of how much information passes over a TCP connection before the receiving host must send an acknowledgement
Reference location of a particular application or process on each machine
Combination of a port number and IP address used by a process to request network services and passes as an argument between layers
Preventer of network congestion by ensuring that transmitting devices do not overwhelm receiving devices data
What action is the purpose of a sliding window in TCP?
Request network services and pass arguments between layers
Reference a location of a particular application or process on each machine
Prevent network congestion by ensuring that transmitting devices do not overwhelm receiving devices data
Regulate how much information passes over a TCP connection before the receiving host must send an acknowledgement
What portion of the IP Datagram (packet) allows IP to detect datagrams with corrupted headers and discard them?
Version Identification
Header Checksum
Time to Live
Flags
What value is the maximum of an octet in Internet Protocol version 4?
239
254
255
256
Which classes allow for a maximum of 254 hosts per network?
Class A address
Class B address
Class C address
Class D address
What class is reserved for multicast addressing?
Class A address
Class B address
Class C address
Class D address
What range of numbers are those of well known port numbers?
0-1023
1024-49151
49152-65535
65536-87000
What characteristic is the major difference between RAM and ROM?
ROM is volatile, RAM is non-volatile
ROM is non-volatile, Ram is volatile
Ram has a slower access time versus ROM
ROM has a slower access time verses RAM
What action is the main purpose of a system cache?
Speed up system ROM
Reduce HDD access time to stored data
Reduce CPU access time to stored data
Reduce RAM access time to stored data
What speed is the maximum data transfer rate of USB3.0 SuperSpeed (SS) transfer mode?
Two GB/s
Four GB/s
Five GB/s
Ten GB/s
What is a peripheral device
A main internal component of a computer
Not a main internal component of a computer
A main component of a computer that can be either internal or external
Not a main component of a computer that can be either internal or external
Which device can optically read an image, printed text, or an object and converts it to a digital image?
Printer
Scanner
Monitor
Camera lens
Which network is a group of computers and associated devices that share a common communications line and typically share the resources of a single processor or server within a small geographical area?
Local Area Network
Wide Area Network
Virtual Private Network
Metropolitan Area Network
Which network is a network that links LAN and MAN by using long-distance communications links leased or purchased from a telecommunications company?
Local Area Network
Wide Area Network
Virtual Private Network
Metropolitan Area Network
Which network uses Carrier Sense Multiple Access/Collision Avoidance to avoid collisions while transmitting data?
Local Area Network
Wide Area Network
Metropolitan Area Network
Wireless Local Area Network
Which WLAN security method is best described as hiding a message in a special code?
SSID broadcasting
MAC filtering
Encryption
Tunneling
Which network proved a private tunnel through the internet?
Local area network
Wide area network
Virtual private network
Metropolitan area network
What year did the Institute of IEEE ratify the use of GbE?
1988
1999
2005
2009
How many T1 DNS access circuits do STEP terminals offer?
24
15
10
7
Which device works as a transceiver that converts the electrical signal utilized in copper UTP network cabling to light waves used for fiber optic cabling?
Media converter
Modem
Switch
Router
Describe a network bridge
Data Link layer network device or software set that logically separates a single network into multiple segments or collision domains in Ethernet networks
Network layer device or software set that logically separates a single network into multiple segments or collision domains in Ethernet networks
Data Link layer device that provide central connection to network devices
Network layer device that provide central connection to network devices
What network routing protocols allow multiple autonomous systems to connect together?
OSPF
EGP
IGP
EIGRP
What network device provides a remote network with connectivity to a host network?
Switch
Modem
Gateway
Converter
Which type of encryption provides the greatest degree of protection since the information fully encodes all the way through the network to the users' own end terminals?
Internet Protocol
End-to-end
Bulk
Link
What characteristic is NOT an advantage of fiber optic cable?
Cost to install and train technicians
Electromagnetic immunity
Low attenuation
Security
In general, how many operating system task categories are there?
Four
Five
Six
Seven
What UNIX system software interacts most closely with the hardware?
Shell
Kernel
User Programs
Dynamic-link library
What Microsoft application is a software program that allows users to create a desktop database?
Word
Access
Outlook
PowerPoint
What Microsoft application is a personal information manager?
Word
Access
Outlook
PowerPoint
