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28 Cards in this Set
- Front
- Back
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Load Balancer:
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A device that distributes incoming client requests among a set of servers.
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Virtual Private Networks:
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mechanisms to create virtual networks on top of public networks and provide confidentiality and authentication by using encryption techniques.
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TCP (Transmission Control Protocol):
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Protocol usually layered on top of IP and which guarantees reliable, in-order, once-and-only-once delivery.
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IP (Internet Protocol):
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Protocol by which computers send messages to each other through the internet. Messages sent via IP can be lost, delivered out of order, with duplicates.
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Timesharing enables computers to work in multi-tasking and multi-user modes (T/F)?
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True
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An advantage of using LANs is:
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Resource Sharing or Instant Communication
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DHCP provides the following 2 key configuration parameters to hosts connecting to a given network: ________ and ________
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IP Address and DNS Server IP Address
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The hardware address can be used as IP network in most cases (T/F)?
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False
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Hardware Address:
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A computer friendly number used for communications in a LAN
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Two commonly distributed computing paradigms used on the Internet include: _______ and _______
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Client/Server and Peer-to-Peer
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Your computer can dynamically learn about IP addresses for local default gateways via the (HTTP/TCP/DHCP/MPMP)______________ protocol
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DHCP
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Computers operate directly with (decimal/hexadecimal/binary) numbers
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Binary
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Hexadecimal 0x2F
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47
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For a successful transmission the ratio of signal power to noise (S/N) must be (>, <, <=, >=, =) to 1?
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> Greater Than
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(Digital/Analog) _____________ signals carry finite amount of information
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Digital
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The power of a signal is proportional to the (cube/square/square-root) _________ of the amplitude of the signal
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Square
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The level of power of a signal decreases as the signal propagates through most channels (True/False)
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True
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It is easier to detect/correct errors when using digital signals vs analog signals (True/False)
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True
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Attenuation is ______ The loss of power as a signal travels through channels
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The loss of power as a signal travels through channels
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A byte is (8/16/32/64/128) __________ bits.
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8
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Signal distortion is caused by (noise/lightning/interference/non-linear properties of the channel) __________________
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non-linear properties of the channel
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Noise is random and cannot be totally filtered from the signal (True/False)
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True
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Error detection needs to be used in combination with __________________ to provide a fully reliable service
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Retransmissions
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The parity bit for the following data bits 1110-001 assuming even parity
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0
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The parity bit for the following data bits 1100-0101 assuming odd parity
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1
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Which code would require more overhead bits: a).-an error correction code that corrects all possible two bits in error or b).- code that detects all possible six bits in error c).-none of the above: (a/b/c)____
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B
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A code that has minimum distance of 2 will not detect any two bits in error (True/False)
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False
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The efficiency of a code where 5 bits are data and 3 bit is overhead is
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5/8 (5+3) = 62.5%
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