30 Questions
What type of communication is a radio or TV signal transmission considered?
Simplex
Which transmission mode utilizes the full capacity of the communication channel during data transmission?
Simplex
What is one of the disadvantages of using a Simplex transmission mode?
Unidirectional nature with no inter-communication between devices
Which device operates using half-duplex transmission?
Walkie talkie
What is a common disadvantage of using a half-duplex transmission mode?
Two-way communication cannot be established simultaneously
Why does Simplex transmission have no mechanism for an acknowledgment from the receiver?
Data flows only in one direction
What is the main advantage of using a parallel transmission mode?
It is easy to program or implement.
In which transmission mode do signals travel in one direction only?
Half-Duplex
What is a disadvantage of using a parallel transmission mode?
It is susceptible to interference in data bits.
Which configuration involves the interconnection of a single mainframe computer to many remote computer terminals?
Multipoint configuration
Why is parallel transmission mode considered cost-ineffective?
It requires more transmission channels.
What characterizes a simplex transmission mode?
Signals travel in one direction only.
In a Caesar Cipher encryption with a key of 3, what is the resulting message for 'Attack at Dawn'?
Dwwdfn Dw Gdyq
In a substitution cipher, how many different keys are possible?
26!
What type of cipher uses a sequence of monoalphabetic ciphers in tandem to encrypt a message?
Polyalphabetic Cipher
Which type of substitution cipher allows any letter to be substituted for any other letter?
Homophonic Substitution Cipher
For the message 'Bob, I love you' encrypted using a monoalphabetic cipher with key 6 and then 20, what is the resulting encrypted message?
Gnu, n etox dhz
'Nkn, s gktc wky.mgsbc' is an encrypted message using which type of cipher?
Monoalphabetic Cipher
What is the main reason for choosing a BUS network topology?
Network is small
In a Tree network topology, what happens if the backbone line breaks?
The entire segment goes down
Which requirement of secure communication involves confirming each other's identity?
Authentication
What is one of the characteristics of a RING network topology?
Network must operate reasonably under heavy load
When considering a STAR network topology, what factor should be taken into account for future growth?
It must be easy to add/remove PCs
What is one example of a Hybrid Topology mentioned in the text?
Tree Topology
What is the key for the substitution cipher used in the text?
Word
In a substitution cipher, what is ensured about the mapping of letters between plain text and cipher text?
No single letter in plain text can map to two different letters in cipher text
What is involved in a columnar transposition cipher?
Reordering characters into columns
According to Shannon's Characteristics of 'Good' Ciphers, what should determine the amount of labor for encryption and decryption?
Amount of secrecy needed
What should the set of keys and enciphering algorithm be according to Shannon's Characteristics?
Simple and straightforward
In a substitution cipher, how many letters are shifted by the key 'WORD' in the provided example?
$4$
Test your knowledge on parallel transmission mode with this quiz covering its advantages, disadvantages, and implementation. Learn about data transmission speed and the number of transmission channels required.
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