Computer Trivia Questions

Statement 1| For a continuous random variable x and its probability distribution function p(x), it holds that 0 ≤ p(x) ≤ 1 for all x. Statement 2| Decision tree is learned by minimizing information gain.

• ATrue, True
• BTrue, False
• CFalse, True
• DFalse, False

A 3-way, set-associative cache is

• Aeffective only if 3 or fewer processes are running alternately on the processor
• Bfaster to access than a direct-mapped cache
• Cpossible only with write-back
• Done in which each main memory word can be stored at any of 3 cache locations

Let f(X) = if x = 1 then 0 else [x * f(x - 1) + x**2]. The value of f(4) is

• A53
• B100
• C29
• D50

The color of a pixel can be represented using the RGB (Red, Green, Blue) color model, which stores values for red, green, and blue, each ranging from 0 to 255. How many bits (binary digits) would be needed to represent a color in the RGB model?

• A24
• B8
• C16
• D32

A packet filter firewall filters at the

• APhysical Layer
• BData link layer
• CNetwork or transport layer
• DApplication or transport

For Kernel Regression, which one of these structural assumptions is the one that most affects the trade-off between underfitting and overfitting:

• AWhether we use Euclidian versus L1 versus L∞ metrics
• BWhether kernel function is Gaussian versus triangular versus box-shaped
• CThe kernel width
• DThe maximum height of the kernel function

What does EXE do when the STP solver times out on a constraint query for a particular path?

• ARemove a subset of the constraints and retry the query.
• BAssume that the query is not satisfiable and stop executing the path
• CRestart STP and retry the query, up to a limited number of retries.
• DAssume that the query is satisfiable and continue executing the path.

Which operating system was released first?

• AWindows
• BOS/2
• CMac OS
• DLinux

The K-means algorithm:

• AConverges to the global optimum if and only if the initial means are chosen as some of the samples themselves
• BRequires the dimension of the feature space to be no bigger than the number of samples
• CMinimizes the within class variance for a given number of clusters
• DHas the smallest value of the objective function when K = 1

Which of these programming languages is a low-level language?

• APython
• BPascal
• CAssembly
• DC#

What does the 'S' in the RSA encryption algorithm stand for?

• ASchottky
• BSecure
• CShamir
• DStable

What is the name of Layer 7 of the OSI model?

• ANetwork
• BApplication
• CPresent
• DSession

Message authentication is a service beyond

• AMessage Integrity
• BMessage Condentiality
• CMessage Sending
• DMessage Splashing

Which of the following is a Wireless traffic Sniffing tool?

• AMaltego
• BNessus
• CWireshark
• DBurpSuit

Which of the following is a personal computer made by the Japanese company Fujitsu?

• APC-9801
• BXmillennium
• CFM-7
• DMSX

Statement 1| The F1 score can be especially useful for datasets with class high imbalance. Statement 2| The area under the ROC curve is one of the main metrics used to assess anomaly detectors.

• AFalse, False
• BFalse, True
• CTrue, True
• DTrue, False

What is the value of this python expression: 1 + 3 % 3?

• A1
• B0
• C3
• D4

Which of the following comes closest to being a perfectly secure encryption scheme?

• AEnigma, a transposition cipher
• BThe Caesar Cipher, a substitution cipher
• CDES (Data Encryption Standard), a symmetric-key algorithm
• DOne-time pad

Adding more basis functions in a linear model, pick the most probably option:

• ADoesn't affect bias and variance
• BDecreases model bias
• CDecreases variance
• DDecreases estimation bias

Sometimes the object module produced by a compiler includes information (from the symbol table) mapping all source program names to their addresses. The most likely purpose of this information is

• Afor the reduction of the symbol-table space needed by the compiler
• Bfor use as input to a debugging aid
• Cto tell the loader where each variable belongs
• Dto increase the run-time efficiency of the program

In computing terms, typically what does CLI stand for?

• AControl Line Interface
• BCommon Language Interface
• CCommon Language Input
• DCommand Line Interface

Which of the following is correct about Python?

• AIt can be easily integrated with C, C++, COM, ActiveX, CORBA, and Java.
• BBoth of the above.
• CIt supports automatic garbage collection.
• DNone of the above.

Which form of encryption does WPA use?

• AShared key
• BLEAP
• CTKIP
• DAES

What tool can be used to perform SNMP enumeration?

• AIP Network Browser
• BWhois
• CNslookup
• DDNSlookup

Statement 1| CIFAR-10 classification performance for convolution neural networks can exceed 95%. Statement 2| Ensembles of neural networks do not improve classification accuracy since the representations they learn are highly correlated.

• ATrue, False
• BTrue, True
• CFalse, True
• DFalse, False

Three of the following are classic security properties; which one is not?

• AConfidentiality
• BIntegrity
• CCorrectness
• DAvailability

A large list of numbers is to be sorted into ascending order. Assuming that a "data movement" is a swap or reassignment of an element, which of the following is a true statement?

• AIf the array is initially sorted in descending order, then insertion sort will be more efficient than selection sort.
• BThe number of comparisons for insertion sort is independent of the initial arrangement of elements.
• CThe number of data movements in selection sort depends on the initial arrangement of elements.
• DThe number of comparisons for selection sort is independent of the initial arrangement of elements.

Which of the following statements about Naive Bayes is incorrect?

• AAttributes can be nominal or numeric
• BAttributes are equally important.
• CAttributes are statistically independent of one another given the class value.
• DAttributes are statistically dependent of one another given the class value.

What does the Prt Sc button do?

• ANothing
• BCaptures what's on the screen and copies it to your clipboard
• CCloses all windows
• DSaves a .png file of what's on the screen in your screenshots folder in photos

Which of the following best describes the joint probability distribution P(X, Y, Z) for the given Bayes net. X <- Y -> Z?

• AP(X, Y, Z) = P(X) * P(Y) * P(Z)
• BP(X, Y, Z) = P(Y) * P(X|Y) * P(Z|Y)
• CP(X, Y, Z) = P(Z) * P(X|Z) * P(Y|Z)
• DP(X, Y, Z) = P(X) * P(Y|X) * P(Z|Y)

What kind of memory is used on memory cache?

• AROM
• BDRAM
• CFlash
• DSRAM

Lenovo acquired IBM's personal computer division, including the ThinkPad line of laptops and tablets, in what year?

• A2002
• B1999
• C2008
• D2005

For a neural network, which one of these structural assumptions is the one that most affects the trade-off between underfitting (i.e. a high bias model) and overfitting (i.e. a high variance model):

• AThe number of hidden nodes
• BThe initial choice of weights
• CThe use of a constant-term unit input
• DThe learning rate

Public key encryption is advantageous over Symmetric key Cryptography because of

• AKey exchange
• BKey length
• CSpeed
• DSpace

A proxy rewall lters at the

• APhysical layer
• BData link layer
• CApplication layer
• DNetwork layer

Which of the following can only be used when training data are linearly separable?

• ALinear Logistic Regression.
• BLinear hard-margin SVM.
• CLinear Soft margin SVM.
• DThe centroid method.

Nvidia's headquarters are based in which Silicon Valley city?

• ASanta Clara
• BPalo Alto
• CCupertino
• DMountain View

How fast is USB 3.1 Gen 2 theoretically?

• A1 Gb/s
• B10 Gb/s
• C8 Gb/s
• D5 Gb/s

Generally, which component of a computer draws the most power?

• AVideo Card
• BProcessor
• CHard Drive
• DPower Supply

The C programming language was created by this American computer scientist.

• AWillis Ware
• BTim Berners Lee
• Cal-Khwārizmī
• DDennis Ritchie

What are the port states determined by Nmap?

• AOpen, filtered, unfiltered
• BOpen, half-open, closed
• CActive, closed, unused
• DActive, inactive, standby

Which of the following activities poses the greatest personal cybersecurity risk?

• APaying a bill using a secure electronic payment system
• BMaking a purchase at an online store that uses public key encryption to transmit credit card information
• CReserving a hotel room by e~mailing a credit card number to a hotel
• DWithdrawing money from a bank account using an automated teller machine (ATM)

In computing, how many bits are in a nibble?

• A2
• B32
• C16
• D4

Who invented the "Spanning Tree Protocol"?

• AVint Cerf
• BPaul Vixie
• CMichael Roberts
• DRadia Perlman

Consider the Bayesian network given below. How many independent parameters would we need if we made no assumptions about independence or conditional independence H -> U <- P <- W?

• A15
• B4
• C3
• D7

Which of the following spreadsheet functions would be most useful for detecting improbably high or low values that have become part of a data set as a result of data entry errors?

• AA function that rounds a numeric value
• BA function that averages numeric values in a column or row
• CA function that sorts values in a column or row
• DA function that counts the values in a column or row

Statement 1| Industrial-scale neural networks are normally trained on CPUs, not GPUs. Statement 2| The ResNet-50 model has over 1 billion parameters.

• ATrue, True
• BTrue, False
• CFalse, True
• DFalse, False

How many bits are commonly in a single byte?

• ASix bits
• BTwelve bits
• CEight bits
• DFifteen bits

When the data must arrive at the receiver exactly as they were sent, its called

• AMessage Integrity
• BMessage Condentiality
• CMessage Splashing
• DMessage Sending

What does "LCD" stand for?

• ALast Common Difference
• BLiquid Crystal Display
• CLong Continuous Design
• DLanguage Control Design