Networking Basics Cisco questions with correct answers
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Course
Networking Basics
Institution
Networking Basics
Set of Rules governing the communication between network devices - Answer protocol
a layer two switch operates at this layer of the TCP/IP model - Answer data link
antiquated layer 1 device which Cisco no longer sells - Answer hub
correct way to measure speed of the info transferred ...
Networking Basics Cisco questions with
correct answers
Set of Rules governing the communication between network devices - Answer
protocol
a layer two switch operates at this layer of the TCP/IP model - Answer data link
antiquated layer 1 device which Cisco no longer sells - Answer hub
correct way to measure speed of the info transferred over a network - Answer bits
per sec.
data at rest - Answer bites
active data - Answer bit
PDU - Answer Data unit = (data + protocols)
correct association of layer, device and PDU - Answer layer 3, router, packets
frames are in what layer? - Answer layer 2
encapsulation - Answer occurs as data is transmitted (down the stack) -- need to
put all these protocols on.
,De-encapsulation - Answer occurs as data is received (up the stack)-- rip of all the
"packaging" to see the content
parameters - Answer encapsulated by sender are used by the received
Proprietary - Answer intellectual property of a company
protocol - Answer governs the communication--> typically on the lower stack
(layers 1-4, applications are in the higher layers)
standard - Answer formally approved model. Interoperable, allows disparate
systems to communicate
CDP - Answer propriety protocol --> Cisco Discovery Protocol. Has additional
features than the standard LLDP
LLDP - Answer Standard Cisco Protocol
Pros of Proprietary Protocol - Answer more efficiency, additional features,
flexibility, competitive advantage and helps with "stickiness" --> because you own
it can be better
Cons of Proprietary Protocol - Answer Less interoperability, does it play well
with others?, ecosystem
data storage - Answer TB (terabytes), PetaBytes
, Transmission speed - Answer kbps (kilo bits per sec), Gbps (giga bits per sec),
Mbps (mega bits per sec)
b= - Answer bits, movement, 8 bits in a byte, binary digit (1 or 0)
B= - Answer byte, rest, 1 byte= 8 bits
k - Answer kilo, 1000 bits/sec
M= - Answer mega bits, 1 million bits
G= - Answer Giga 1 billlion bits
OSI= - Answer Open Systems Interconnect is the standard reference model used
in networking and communications (it's modular)
- 7 layers
- basis for protocols used when devices need to communicate over a network
- every layer of the model has protocols
- the upper layers of the model are dependent upon the lower layers
7 layers of the OSI model - Answer physical, data link, network, transport,
session, presentation, application (please do not throw sausage pizza away)
most common protocol at layer 3 - Answer IP/ethernet
most common protocol at layer 1 - Answer wires/wireless
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