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The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
John dalton thought that what unit, which means "indivisible", could not be divided into smaller, simpler particles?
A. neutron
B. atom
C. electron
D. nucleus
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What science is the study of the occurrence, distribution, and determinants of health and disease in a population?
A. epidemiology
B. physiology
C. histology
D. toxicology
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Tick the \emph{false} assertion. The ambiguity issue in the decryption algorithm of the Rabin cryptosystem can be solved by\dots
A. encrypting the message twice.
B. encrypting the message appended to itself.
C. appending some integrity checks to the message before encryption.
D. ensuring that the other possible plaintexts make no sense.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What is the connection between the two hemispheres of the brain called?
A. cerebral cortex
B. spinal cord
C. corpus callosum
D. cranial septum
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which of the following would be the most impactful to an ecosystem?
A. an 8.1 earthquake
B. a tree falling
C. a light rainfall
D. a minor snowstorm
Answer: | A | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Erosion breaks rocks down from larger parts into what?
A. river
B. ground
C. soil
D. small
E. dirt
F. tiny
G. crust
H. sand
Answer: | C | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What is the worst case complexity of listing files in a directory? The file system implements directories as hash-tables.
A. $O(1)$
B. $O(number of direntries in the directory)$
C. $O(size of the file system)$
D. $O(number of direntries in the file system)$
E. $O(log(number of direntries in the directory))$
Answer: | B | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which of the following statements about libFuzzer is/are correct?
A. Unit tests may serve as foundation to create libFuzzer fuzzing
stubs.
B. In libFuzzer’s default mode (not fork-mode), the tested APIs
must not contain \texttt{exit()}.
C. It is better to put narrow targets into the fuzzing stubs, e.g.,
if a target can parse several data formats, split it into several
targets, one per format.
D. libFuzzer can only test single-threaded targets.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The ability of matter to combine chemically with other substances is known as?
A. turbidity
B. solubility
C. reactivity
D. permeability
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which of the following statements is correct?
A. When applying stochastic gradient descent on the objective function $f(\boldsymbol{w}):=\sum_{n=1}^{30}\left\|\boldsymbol{w}-\boldsymbol{x}_{n}\right\|^{2}$ where $\boldsymbol{x}_{n}$ are the datapoints, a stochastic gradient step is roughly $30 \times$ faster than a full gradient step.
B. In practice, it could be good to let your model first overfit your task, and then apply drop-out or other regularization techniques.
C. When applying stochastic gradient descent on the objective function $f(\boldsymbol{w}):=\sum_{n=1}^{30} n \cdot\|\boldsymbol{w}\|^{2}$, a stochastic gradient (for the $n$-th summand) is given by $2 n \cdot \boldsymbol{w}$.
D. The function $f(\boldsymbol{u} ; \boldsymbol{v}):=g\left(\boldsymbol{u} \boldsymbol{v}^{\top}\right)$ is convex over the set of pairs of vectors $(\boldsymbol{u} ; \boldsymbol{v}) \in \mathbb{R}^{2} \times \mathbb{R}^{2}$, when $g: \mathbb{R}^{2 \times 2} \rightarrow \mathbb{R}$ is defined as $g(\boldsymbol{X}):=X_{12}+X_{21}$.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
A person wanting to protect humans from electrocution through wire contact would wrap the wire in
A. a tin can barrier
B. a metal beam with steel
C. a copper rope with barbs
D. a log filled with sawdust
Answer: | D | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
the moon revolving around the Earth causes what?
A. friction
B. energy
C. colors
D. Energy.
E. cycles
F. our star
G. new moon
H. heat
Answer: | G | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What does the Earth being tilted on its rotating axis cause?
A. wind
B. the galaxy
C. summer
D. spring
E. rainfall
F. heat
G. the moon
H. the solar system
Answer: | C | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The anterior muscles of the neck facilitate swallowing and what else?
A. hearing
B. perspiration
C. speech
D. crying
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The slight angle of the axis of the human planet is responsible for the energy allotment that is received by what?
A. polar areas
B. mars continents
C. free countries
D. all countries
Answer: | D | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Let $K = (K_1, K_2,..., K_n)$, where each $K_i$ is $0$ or $1$ with probability $1/2$. Let $K'=(K'_1, K'_2, ..., K'_n)$ such that, for each $i$, $K'_i \in {0, 1}$ and $K'_{i} = \sum_{j = 1}^i K_j ext{mod} 8.$ True or false: Using $K'$ as the key one can achieve perfect secrecy if the message is $n$ bits.
A. True
B. False
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What type of disease is muscular dystrophy?
A. contagious disease
B. infectious disease
C. mutation
D. a wasting disease
Answer: | D | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
A multiset is an unordered collection where elements can appear multiple times. We will represent a multiset of Char elements as a function from Char to Int: the function returns 0 for any Char argument that is not in the multiset, and the (positive) number of times it appears otherwise: type Multiset = Char => Int What should replace ??? so that the following function computes the underlying set of the m multiset, formed from its distinct elements? For example, the underlying set of the multiset M = {'a', 'a', 'c', 'd', 'd'} is S = {'a', 'c', 'd'}. type Set = Char => Boolean def multisetToSet(m: Multiset): Set = ???
A. (x: Int) => m(x) > 0
B. x => m(x) > 0
C. (x: Char) => m(x)
D. (x: Char) => m(x) == 0
E. m(x) > 0
F. m(x)
Answer: | B | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What type of orbitals do electrons in successive atoms on the periodic table tend to fill first?
A. orbital lobes
B. outer orbitals
C. high energy
D. low-energy
Answer: | D | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Whisk ferns have yellow sporangia and no what?
A. leaves
B. roots
C. stems
D. flowers
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The distance between two crests of a wave of light is referred to as what, which is related to the color of light?
A. magnitude
B. bandwidth
C. wavelength
D. spectrum
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which of these live on land as adults?
A. tiger sharks
B. electric eels
C. fire-bellied toads
D. catfish
Answer: | C | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What is involved in the cellular process of mitosis?
A. Most plants
B. layers of fat
C. A computer
D. Energy.
E. Chemical energy
F. centrioles
G. Energy
H. animals
Answer: | F | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What can regrow segments that break off?
A. dogs
B. barnacles
C. parasites
D. fungi
E. cats
F. leeches
G. a cuticle
H. gorillas
Answer: | F | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which protocol does \emph{not} use RC4.
A. WEP
B. WPA
C. WPA2
D. TLS
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Tick all correct answers:
A. Fuzz testing scales at least to 1'000s of lines of code.
B. Compiler warnings scale to millions lines of code.
C. Formal verification scales at least upto 100'000s of lines of code.
D. Formal verification and concolic execution scale to the same extent.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What binds together to form RNA and DNA
A. nucleotides
B. they bend
C. electrically
D. Most plants
E. pollen
F. orchids
G. acetic acid
H. peachleaf willow
Answer: | A | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
what do some viruses have a coating of?
A. chromosomes
B. calories
C. aqueous solution
D. bioaerosols
E. acetic acid
F. phospholipids
G. DNA
H. a cuticle
Answer: | F | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The rate at which an unstable isotope decays is measured in a unit known as what?
A. half-life
B. full-life
C. half-time
D. staying-life
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Thick the \emph{incorrect} assertion.
A. The goal of SAS-based cryptography is to reduce the length of the string that has to be authenticated.
B. One way to authenticate a SAS is to use your phone.
C. One can obtain a secure channel from a narrowband authenticated channel using SAS-based cryptography.
D. SAS-based cryptography always requires the SAS to be collision-resistant.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Plasma cells are activated B cells that secrete what?
A. Leptospirosis
B. Activated charcoal
C. Cellular phone services
D. Sweat
E. major threat to health
F. Warriors of the body.
G. Something that causes allergies
H. Chemical energy
Answer: | F | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
A creature can hide in plain sight from predators because
A. it burns
B. it misdirects
C. it cries
D. it stinks
Answer: | B | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What creates evolution?
A. animals with backbones
B. coded genes
C. heterotrophs
D. Sexual reproduction
E. Geology
F. haploid plants
G. Organs
H. Technology
Answer: | D | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What is the general name for a wave that travels along the surface of a medium?
A. light wave
B. stack wave
C. surface wave
D. speed wave
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What are the gas giants mostly made of .
A. hydrogen and carbon
B. nitrogen and helium
C. hydrogen and helium
D. calcium and helium
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What occurs when two waves combine and cancel each other out?
A. destructive interference
B. primitive interference
C. molecular interference
D. terrible interference
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The properties of cyclic hydrocarbons are generally quite similar to those of the corresponding open-chain compounds. so cycloalkanes (with the exception of cyclopropane, which has a highly strained ring) act very much like noncyclic alkanes. cyclic structures containing five or six carbon atoms, such as cyclopentane and cyclohexane, are particularly what?
A. stable
B. small
C. reactive
D. large
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What type of fertilization do most reptiles use to reproduce?
A. mechanical
B. internal
C. asexual
D. external
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Suppose that you possess a $D$-ary encoding $\Gamma$ for the source $S$ that does not satisfy Kraft's Inequality. Specifically, in this problem, we assume that our encoding satisfies $\sum_{i=1}^n D^{-l_i} = k+1 $ with $k>0$. What can you infer on the average code-word length $L(S,\Gamma)$?
A. $L(S,\Gamma) \geq H_D(S)-\log_D(e^k)$.
B. $L(S,\Gamma) \geq k H_D(S)$.
C. $L(S,\Gamma) \geq rac{H_D(S)}{k}$.
D. The code would not be uniquely-decodable and thus we can't infer anything on its expected length.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Nonmetal structures contain what type of bonds?
A. gravitational
B. covalent
C. prevalent
D. polymeric
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What is formed when an acidic solution and a basic solution react together in a neutralization reaction?
A. salt
B. seawater
C. shallow
D. Sodium
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which of the following is an acceptable commitment scheme, i.e., one that verifies the hiding and binding property (for a well chosen primitive and suitable $x$ and $r$):
A. $Commit(x;r) = Enc_r(x)$, where $Enc_r$ is a symmetric encryption scheme with key $r$.
B. $Commit(x;r) = H(x)$, where $H$ is a hash function.
C. $Commit(x;r) = x \oplus r$, where $\oplus$ is the bitwise xor operation.
D. $Commit(x;r) = H(r\|x)$, where $H$ is a hash function and $\|$ denotes the concatenation.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which would likely reproduce?
A. copiers
B. waterfowl
C. rocks
D. rivers
Answer: | B | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
When constructing a word embedding, negative samples are
A. word - context word combinations that are not occurring in the document collection
B. context words that are not part of the vocabulary of the document collection
C. all less frequent words that do not occur in the context of a given word
D. only words that never appear as context word
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which of the following is/are true about fuzzing with sanitizers?
A. Some fuzzers use fork servers to reduce sanitizer overhead.
B. The set of sanitizers used during a fuzzing campaign must be
carefully chosen (tradeoff between bug visibility/execution
speed).
C. Some fuzzers dynamically tweak sanitizers to speed up fuzzing.
D. ASAN instrumentation has a negligible startup overhead.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Excretion is the process of removing excess water and wastes from the body. what are the main organs of excretion?
A. lungs
B. eyes
C. kidneys
D. brains
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What is defined as the spreading of white light into its full spectrum of wavelengths?
A. combustion
B. dispersion
C. saturation
D. immersion
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Alice flipped a switch and the ceiling fan started running because
A. the electricity was cut off
B. a circuit was opened
C. a fuse was blown
D. a circuit was closed
Answer: | D | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
what do microbial fuel cells convert chemical energy into?
A. rays or beams
B. transportation technology
C. Deoxyribonucleicacid
D. flow of electrons
E. hydrogen and oxygen
F. deoxyribonucleic acid
G. an engine
H. heating liquids
Answer: | D | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Some animals get caught easily by other animals because they are slow while the predators are
A. Nice
B. speedy
C. manipulative
D. crazy
Answer: | B | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
How do starfish communicate with each other?
A. huddle together
B. writing
C. during the day
D. pheromones
E. Chemical energy
F. waving their arms
G. Decibels
H. talking
Answer: | D | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Catabolism and anabolism are the two types of what?
A. calcium
B. cells
C. metabolism
D. heart rate
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Why do sodium and chloride ions attract each other?
A. magnetism
B. sulfides attract
C. like attracts like
D. opposites attract
Answer: | D | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What has a negative impact on an ecosystem?
A. health
B. Pollution
C. Pesticides
D. time
E. disease
F. sunlight
G. loggers
H. Cars
Answer: | G | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which of the following problems has not been shown equivalent to the others?
A. The RSA Key Recovery Problem.
B. The RSA Decryption Problem.
C. The RSA Factorization Problem.
D. The RSA Order Problem.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What keeps earth in orbit around the sun?
A. gravity
B. energy
C. motion
D. momentum
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Let $\mathbb F$ be a field of cardinality $q$ and let $0<k<n\leq q$ be unspecified integers. As seen in the lecture, we generate a $(n,k,d_{min})$ Reed-Solomon code with the following mapping: $$\mathbb F^k
ightarrow \mathbb F^n ~~,~~ \vec u \mapsto \vec c =(P_{\vec u}(a_1),P_{\vec u}(a_2),\ldots,P_{\vec u}(a_n))$$ for $a_i \in \mathbb F$ all distinct and $P$ a polynomial of degree $k-1$ with coefficient vector $\vec u\in\mathbb F^k$. Now, we construct a $(n,k',d'_{min})$ code $\mathcal C'$ similarly to the above one by assigning $a_1\leftarrow a_2$ while leaving $n,P$ and $a_2,\ldots,a_n$ unchanged. As before, the code is generated by evaluating $P_{\vec u}(a_2,a_2,a_3,\dots,a_n)$ over all possible coefficients vectors $\vec u \in \mathbb F^k$. This is by definition not an RS code, however it is still a well-defined linear block code. True or false: We know for certain that $d'_{min}=d_{min}-1$.
A. False
B. True
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Acids are molecular compounds that dissolve in water to produce hydronium ions and what else?
A. a proton
B. a neutron
C. an alkali
D. an anion
Answer: | D | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What force pulls object downwards to the earth?
A. momentum
B. motion
C. kinetic energy
D. gravity
Answer: | D | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
A simple substitution cipher can be broken \dots
A. by analysing the probability occurence of the language.
B. only by using a quantum computer.
C. by using the ENIGMA machine.
D. by using public-key cryptogaphy.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The amount of transpiration is lower in
A. summer
B. fall
C. winter
D. spring
Answer: | C | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What does a virus inject into the host cell?
A. proteins acid
B. cells acid
C. Acetic acid
D. nucleic acid
Answer: | D | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Pushing a little kid on a swing is easy because they are light. It will require more strength to push when
A. when he loses weight
B. when he eats chicken
C. seventy four plus five
D. he's older and heavier
Answer: | D | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
In a photosystem, pigments in the light-harvesting complex pass light energy to two special molecules of what in the reaction center?
A. nutrient
B. chlorophyll
C. calcium
D. carbonate
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which mineral do native americans use to decorate items?
A. Amethyst
B. Tanzanite
C. turquoise
D. Topaz
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What are the outer-shell electrons of an atom called?
A. valence electrons
B. outer electrons
C. helium electrons
D. organism electrons
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What causes pollination?
A. Bees
B. wind
C. roots
D. coffee
E. Oak
F. sunlight
G. animal
H. water
Answer: | B | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
what is a rainbow formed by?
A. Condensation
B. gravity
C. sunlight
D. energy of moving objects
E. pot of gold
F. rain or sun shine
G. bending of light
H. h2o
Answer: | G | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What stops once menopause happens?
A. Menial tasks stop
B. Plant growth is reduced
C. Pulse stops
D. Dehydration
E. Breathing stops
F. Menstruation stops
G. smoking tobacco
H. recovery time from fatigue
Answer: | F | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
If we cut down trees from the rainforest what will suffer more?
A. Buildings
B. Cars
C. Space
D. Cats
Answer: | D | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Opposite charges attract and like charges do what?
A. nothing
B. repulse
C. rebound
D. impede
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Choose the \emph{correct} statement.
A. $\mathbb{Z}_n$ is a field $\Leftrightarrow$ $n$ is a composite number
B. $\mathbb{Z}_n$ is a field $\Leftrightarrow$ $\mathbb{Z}_n^* = \mathbb{Z}_n$
C. $\mathbb{Z}_n$ is a field $\Leftrightarrow$ $n$ is a prime
D. $\mathbb{Z}_n$ is a field $\Leftrightarrow$ $\mathbb{Z}_n^* = \emptyset$
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which component of the electron transport chain does cyanide inhibit?
A. mitochondrial matrix
B. cytochrome c oxidase
C. adenosine diphosphate
D. succinate dehydrogenase
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Assume we have $N$ training samples $(\xx_1, y_1), \dots, (\xx_N, y_N)$ where for each sample $i \in \{1, \dots, N\}$ we have that $\xx_i \in \R^d$ and $y_i \in \R$. For $\lambda \geq 0$, we consider the following loss:
L_{\lambda}(\ww) = rac{1}{N} \sum_{i = 1}^N (y_i - \xx_i^ op \ww)^2 + \lambda \Vert \ww \Vert_2, and let $C_\lambda = \min_{\ww \in \R^d} L_{\lambda}(\ww)$ denote the optimal loss value.
Which of the following statements is extbf{true}:
A. For $\lambda = 0$, the loss $L_{0}$ is convex and has a unique minimizer.
B. $C_\lambda$ is a non-increasing function of $\lambda$.
C. $C_\lambda$ is a non-decreasing function of $\lambda$.
D. None of the statements are true.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What can be done to make hair dryers safer?
A. remove plastic covering
B. immerse in water
C. heating liquids
D. Add shock protection
E. converting electricity to heat
F. Electric generators
G. a hydraulic system
H. increase current
Answer: | D | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What atmospheric layer lies above the highest altitude an airplane can go and below the lowest altitude a spacecraft can orbit?
A. thermosphere
B. mesosphere
C. stratosphere
D. troposphere
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Meissner’s corpuscles are not as plentiful in the palms as they are in the what other part of the hand?
A. bones
B. fingertips
C. fingernails
D. cuticles
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What is made from the minerals in rocks known as bauxite?
A. titanium
B. coins
C. glass
D. aluminum
Answer: | D | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Tick the \textbf{true} assertion. $x\in \mathbf{Z}_{n}$ is invertible iff \ldots
A. $\varphi(n)= n-1$.
B. $x$ is prime.
C. $x$ is not prime.
D. $gcd(x,n) = 1$.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What is the standard unit for mass?
A. pound
B. kilogram
C. meter
D. ounce
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What function does the longer flagellae perform in dinoflagellates?
A. grasps
B. propels
C. attacks
D. defends
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
How does the amount of daylight change in a location as the season there changes to fall?
A. uncontrolled
B. colors
C. reduce
D. increases
E. depends on the hemisphere
F. temperature
G. stays the same
H. decreases
Answer: | H | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Consider a linear regression problem with $N$ samples where the input is in $D$-dimensional space, and all output values are $y_{i} \in\{-1,+1\}$. Which of the following statements is correct?
A. (a) linear regression cannot "work" if $N \gg D$
B. (b) linear regression cannot "work" if $N \ll D$
C. (c) linear regression can be made to work perfectly if the data is linearly separable
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Populations of viruses do not grow through division because they are what?
A. reproduce
B. homogenous
C. negative
D. dangerous
E. Loose
F. parasites
G. complex
H. fungi
Answer: | F | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
At 30 degress fahrenheit, water is
A. hot
B. solid
C. quenching
D. gaseous
Answer: | B | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The difference between the theoretical half-reaction reduction potential and the actual voltage required is called what?
A. overpotential
B. resistance
C. excess
D. overcharge
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
When constructing a word embedding, negative samples are
A. word - context word combinations that are not occurring in the document collection
B. context words that are not part of the vocabulary of the document collection
C. all less frequent words that do not occur in the context of a given word
D. only words that never appear as context word
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Consider a movie recommendation system which minimizes the following objective
rac{1}{2} \sum_{(d,n)\in\Omega} [x_{dn} - (\mathbf{W} \mathbf{Z}^ op)_{dn}]^2 + rac{\lambda_w}{2}
orm{\mathbf{W}}_ ext{Frob}^2 + rac{\lambda_z}{2}
orm{\mathbf{Z}}_ ext{Frob}^2
where $\mathbf{W}\in \R^{D imes K}$ and $\mathbf{Z}\in \R^{N imes K}$.
Suppose movies are divided into genre A and genre B (i.e., $\mathbf{W}_A\in \R^{D_A imes K}, \mathbf{W}_B\in \R^{D_B imes K}, \mathbf{W}=[\mathbf{W}_A; \mathbf{W}_B]$, with $D_A\!+\!D_B=D$) and users are divided into group 1 and group 2 (i.e., $\mathbf{Z}_1\in \R^{N_1 imes K}, \mathbf{Z}_2\in \R^{N_2 imes K}, \mathbf{Z}=[\mathbf{Z}_1; \mathbf{Z}_2]$, with $N_1\!+\!N_2=N$). In addition, group 1 users only rate genre A movies while group 2 users only rate genre B movies. Then instead of training a large recommendation system with $(\mathbf{W}, \mathbf{Z})$, one may train two smaller recommendation systems with parameters $(\mathbf{W_A}, \mathbf{Z_1})$ and $(\mathbf{W_B}, \mathbf{Z_2})$ separately. If SGD is used to solve the minimization problems and all conditions remain the same (e.g., hyperparameters, sampling order, initialization, etc), then which of the following statements is true about the two training methods?
A. Feature vectors obtained in both cases remain the same.
B. Feature vectors obtained in both cases are different.
C. Feature vectors obtained in both cases can be either same or different, depending on the sparsity of rating matrix.
D. Feature vectors obtained in both cases can be either same or different, depending on if ratings in two groups and genres are evenly distributed.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
K-Means:
A. always converges to the same solution, no matter the initialization
B. always converges, but not always to the same solution
C. doesn't always converge
D. can never converge
Answer: | B | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The cytoplasm divides during what process?
A. genesys
B. cytokinesis
C. metamorphosis
D. osmosis
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Let $K = (K_1, K_2,..., K_n)$, where each $K_i$ is $0$ or $1$ with probability $1/2$. Let $K'=(K'_1, K'_2, ..., K'_n)$ such that, for each $i$, $K'_i \in {0, 1}$ and $K'_{i} = \sum_{j = 1}^i K_j ext{mod} 8.$ True or false: Using $K'$ as the key one can achieve perfect secrecy if the message is $n$ bits.
A. True
B. False
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What common code do all known living organisms use?
A. biochemical
B. Morse code
C. genetic
D. code of ethics
Answer: | C | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Tick the \textbf{false} statement regarding the Enigma machine.
A. It is an electro-mechanical encryption device used by German armies in World War 2.
B. Its specifications are secret.
C. Its secret parameters are: ordered permutations, an involution, and a number.
D. It was patented in 1918.
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Which of the following statements is correct concerning the use of Pearson’s Correlation for user- based collaborative filtering?
A. It measures whether different users have similar preferences for the same items
B. It measures how much a user’s ratings deviate from the average ratings I
C. t measures how well the recommendations match the user’s preferences
D. It measures whether a user has similar preferences for different items
Answer: | A | m1_preference |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
What emerges from an insect egg?
A. parasite
B. larva
C. fungi
D. cocoon
Answer: | B | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
If you see a mushroom on an old decaying log, its because a mushroom is a decomposer, which gets its food from
A. non-alive things
B. space
C. computers
D. the store
Answer: | A | openbookqa |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
what do people transmit when using telephones for communication?
A. internet signals
B. diseases
C. fibers
D. SNPs
E. power
F. waves
G. energy
H. h2o
Answer: | F | qasc |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Contour tillage helps slow water run-off and what process that causes topsoil loss?
A. soil erosion
B. ice shelf erosion
C. plate tectonics
D. water erosion
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
The cell wall of plants is made up of a complex carbohydrate that is a polymer of what sugar?
A. glucose
B. sucrose
C. fructose
D. insulin
Answer: | A | sciq |
The following are multiple choice questions (with answers) about knowledge and skills in advanced master-level STEM courses.
Let $n$ be any positive integer. Three of the following assertions are equivalent. Tick the remaining one.
A. $\mathbb{Z}_n$ is a field.
B. $\varphi(n)=n-1 $, where $\varphi$ denotes the Euler totient function.
C. $n$ is a prime power.
D. Any element $x \in \mathbb{Z}_n \backslash \{0\}$ is invertible.
Answer: | A | m1_preference |
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