Proxy, DNS, Security, Cloud, AI, ML, Webtech Flashcards by Prabhash K P

A proxy server
1) hides your IP
2) can encrypt data
3) can block access to certain web pages, based on IP address or contents
4) can function as firewall
5) can cache sites

All of them

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a strong option for popular websites that need to balance the load of many incoming requests
1) transparent proxy
2) forward proxy
3) reverse proxy
4) anonymous proxy

reverse proxy

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helps prevent identity theft and keep your browsing habits private
1) transparent proxy
2) forward proxy
3) reverse proxy
4) anonymous proxy

anonymous proxy

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They can prevent a website from serving you targeted marketing content based on your location
1) transparent proxy
2) forward proxy
3) reverse proxy
4) anonymous proxy

anonymous proxy

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This passes a false IP address for clients while identifies itself as a proxy
1) reverse proxy
2) anonymous proxy
3) distorting proxy
4) High anonymity proxy
5) SSL proxy

distorting proxy

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This periodically change the IP address they present to the web server
1) reverse proxy
2) anonymous proxy
3) distorting proxy
4) High anonymity proxy
5) SSL proxy

High anonymity proxy

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TOR Network is an example of
1) reverse proxy
2) anonymous proxy
3) distorting proxy
4) High anonymity proxy
5) SSL proxy

High anonymity proxy

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This provides encryption between the client and the server
1) reverse proxy
2) anonymous proxy
3) distorting proxy
4) High anonymity proxy
5) SSL proxy

SSL proxy

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Cache cannot be used with
1) reverse proxy
2) anonymous proxy
3) distorting proxy
4) High anonymity proxy
5) SSL proxy

SSL proxy

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Top level domain
http://bsnl.co.in
1) co.in
2) .in
3) bsnl.co.in
4) bsnl

.in
(root domain is the hidden dot at the end like .in. .com.)

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in DNS, FQDN stands for

Fully Qualified Domain Name

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How many DNS root servers are available?

13
operated by 12 different organizations

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Root server replies to resolver with
1) IP address of site
2) IP address of TLD server
3) IP address of authoritative server

IP address of TLD server
TLD: Top Level Domain

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TLD server stores address information for
1) top level domains
2) root server
3) both

top level domains
(.net, .com, .org etc.)

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TLD server replies to resolver with
1) IP address of site
2) IP address of root server
3) IP address of authoritative name server

IP address of authoritative server

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The final authority about IP address of a site
1) root server
2) TLD server
3) authoritative name server

authoritative name server

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DNS response for IPv4 address
1) A record
2) AA record
3) AAA record
4) AAAA record

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DNS response for IPv6 address
1) A record
2) AA record
3) AAA record
4) AAAA record

AAAA

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The _______ record resolves domain names to domain names
1) A record
2) CNAME record
3) MX record
4) SOA record

CNAME records

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DNS record pointing to mail servers
1) A record
2) CNAME record
3) MX record
4) SOA record

MX record

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The _______ record stores administrative information about a DNS zone.
1) A record
2) CNAME record
3) MX record
4) SOA record

SOA (start of authority)

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The _____ provides
the name of the authoritative name
server within a domain.
1) MX record
2) CNAME record
3) NS record
4) SOA record

NS (Name Server)

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The _______ points to a server and a service by including a port number.
1) MX record
2) SRV record
3) NS record
4) SOA record

SRV (service record)

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The _______ record resolves domain names to IP addresses
1) A record
2) AAAA record
3) PTR record
4) SOA record

1) A record (IPv4)
2) AAAA record (IPv6)

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The _______ record resolves IP addresses to domain names 1) A record 2) AAAA record 3) PTR record 4) SOA record

PTR record

All DNS records also have a ________ and indicates how often a DNS server will refresh that record. 1) TTL 2) TLT

TTL, which stands for time-to-live,

Information Security Components or Qualities are 1) Confidentiality 2) Integrity 3) Availability 4) Authenticity

1,2,3 Confidentiality - Preventing disclosure of information to unauthorized individuals or systems Integrity - Data shall not be modified without authorization. Availability - must be available when it is needed

Sender Policy Framework (SPF) is against 1) spoofing 2) spamming

spoofing emails (SPF is an email authentication method)

in WiFi security, WPA stands for

Wi-Fi Protected Access

in WiFi security, WEP stands for

Wired Equivalent Privacy

Types of DNS queries 1) Recursive 2) Iterative 3) non-recursive

all of them

Different kinds of firewalls 1) packet filters 2) application gateways 3) proxy servers

all of them

_______firewall examines each packet based on Source IP address, Destination IP address, TCP/UDP source port and TCP/UDP destination port 1) static packet filters 2) circuit-level gateways

static packet filters - Logging capabilities are limited here - Does not support user authentication

Is a router with an access list a firewall? (a router with packet filtering capabilities) 1. Yes 2. No

Yes

___________ firewalls are susceptible to IP spoofing 1) static packet filters 2) circuit-level gateways

static packet filters

Larger enterprises can also use _________ as part of a layered defense to screen potentially harmful traffic between internal departments. 1) static packet filters 2) circuit-level gateways

static packet filters

_________ monitor TCP handshakes and other network protocol session initiation messages across the network 1) static packet filters 2) circuit-level gateways

circuit-level gateways (They don't inspect the packets themselves)

packet filtering firewall is 1) Stateful Inspection Firewall 2) Stateless Firewall 3) Application-Level Gateway Firewall 4) Next-Generation Firewall

Stateless Firewall

_______ is referred to as a proxy firewall 1) static packet filters 2) circuit-level gateways 3) Application-Level Gateway Firewall 4) Next-Generation Firewall

Application-Level Gateway Firewall

_________ monitors TCP handshakes and other network protocol session initiation messages 1) static packet filters 2) circuit-level gateways 3) Application-Level Gateway Firewall 4) Next-Generation Firewall

circuit-level gateways - works in seesion layer

_________ works in session layer 1) static packet filters 2) circuit-level gateways 3) Application-Level Gateway Firewall 4) Next-Generation Firewall

circuit-level gateways - monitors TCP handshakes and other network protocol session initiation messages

_________checks contents of the packets in addition to headers 1) static packet filters 2) circuit-level gateways 3) Application-Level Gateway Firewall 4) Next-Generation Firewall

3 and 4

This type of firewall is situated at Layer 3 and Layer 4 of the Open Systems Interconnection (OSI) model. 1) Stateful Inspection Firewall 2) Stateless Firewall 3) Application-Level Gateway Firewall 4) Next-Generation Firewall

Stateful Inspection Firewall

MSSPs offer cloud-based firewalls. MSSP stands for

Managed Security Service Providers

Storage virtualization is commonly used in 1) NAS 2) SAN

SAN: storage area networks

Humanoid robot 1) Erica 2) Sophia 3) Ameca

all of them

Three types of machine learning

1) supervised learning 2) reinforcement learning 3) unsupervised learning

machine learns from known datasets (set of training examples), and then predict the output. 1) supervised learning 2) reinforcement learning 3) unsupervised learning

supervised learning

Classifications and Regression are algorithms for 1) supervised learning 2) reinforcement learning 3) unsupervised learning

supervised learning

An AI agent is trained by giving some commands, and on each action, an agent gets a reward as a feedback. Using these feedbacks, agent improves its performance 1) supervised learning 2) reinforcement learning 3) unsupervised learning

reinforcement learning can be positive or negative reinforcement

The agent needs to learn from patterns without corresponding output values. The algorithms are trained with data which is neither labeled nor classified 1) supervised learning 2) reinforcement learning 3) unsupervised learning

unsupervised learning

Clustering and Association are algorithms for 1) supervised learning 2) reinforcement learning 3) unsupervised learning

unsupervised learning

Algorithms for supervised learning 1) Association 2) Classifications 3) Clustering 4) Regression

Classifications and Regression

Algorithms for unsupervised learning 1) Association 2) Classifications 3) Clustering 4) Regression

Clustering and Association

enables a computer system to understand and process human language such as English 1) NLP 2) DNS

NLP: Natural Language processing

The Input and output of NLP applications can be 1) speech 2) text 3) image 4) all the above

1 and 2 speech or text

_______ provides the ability to an AI agent to mimic the human brain. 1) NLP 2) Deep learning

Deep learning

Deep learning can use 1) supervised learning 2) unsupervised learning 3) both

both

PHP is used in 1) Server-side scripting 2) Command line scripting 3) Writing desktop applications 4) All of the above

All of the above

You can make a PHP script to run it without any server or browser T/F

True You only need the PHP parser to use it this way. This type of usage is ideal for scripts regularly executed using cron (on *nix or Linux) or Task Scheduler (on Windows). These scripts can also be used for simple text processing tasks

_____ is ideal for scripts regularly executed using cron (on *nix or Linux) or Task Scheduler (on Windows) 1) PHP for Server-side scripting 2) PHP for Command line scripting 3) PHP for Writing desktop applications

PHP for Command line scripting

PHP-GTK is used for 1) Server-side scripting 2) Command line scripting 3) Writing desktop applications 4) All of the above

Writing desktop applications

PHP can output 1) HTML 2) images 3) PDF 4) flash movies

all of them

________ is a dynamic language where you can safely modify a program while it is running. 1) PHP 2) Java

Java

REPL in python implementation stands for

Read Eval Print Loop

Melissa was a 1) Boot sector viruses 2) E-mail virus 3) worm

E-mail virus

______ attach itself to a file 1) virus 2) worm

virus

______ copies itself across the network without attachment 1) virus 2) worm

worm

_______ can be used to conduct distributed denial of service attacks or to send spam email 1) zombies 2) proxy server

zombies Refers to a computer that connects to the Internet and is controlled by unauthorized third party without permission and awareness of computer's user

______ refers to a computer that connects to the Internet and is controlled by unauthorized third party without permission and awareness of computer's user 1) zombies 2) proxy server

zombies can be used to conduct distributed denial of service attacks or to send spam email

An E-mail virus 1) MyDoom 2) Melissa

Melissa

Microsoft suffered an attack from a DDoS called ____ 1) MyDoom 2) Melissa

MyDoom

Sender ID Framework (SIDF) is used to counter 1) Virus 2) E-mail spoofing 3) Phishing

E-mail spoofing and Phishing

All administrative domains registered with the Internet form a hierarchical structure, called _____

DNS domain namespace An administrative domain is a group of computers in a single administrative unit.

All DNS servers fall into one of four categories: 1) Recursive resolvers 2) root name servers 3) TLD name servers 4) authoritative name servers

In DNS lookup process (when there is no caching), these four DNS servers work mutually to resolve the IP address for a specified domain name

Root name server is managed by 1) ICAAN 2) IANA

ICAAN: Internet Corporation for Assigned Names and Numbers

TLD name server is managed by 1) ICAAN 2) IANA

IANA: Internet Assigned Numbers Authority

ISO/IEC 27002 is an information security standard

Typically, an attacker sends an e-mail message that seems it has originated from a legitimate Internet address. 1) spoofing 2) phishing 3) spamming

phishing

Virtualization is mainly used for 1) Network Virtualization 2) Server Virtualization 3) Storage Virtualization 4) all of them

all of them

Two major roles in Service-Oriented Architecture 1) Service Provider 2) Service Transporter 3) Service consumer

1) Service Provider 3) Service consumer

A virtual assistant 1) Erica 2) Sophia 3) Ameca 4) TeslaBot

TeslaBot

speech recognition system can be 1) Speaker Dependent 2) Speaker Independent 3) either 1 or 2

either 1 or 2

which one is correct 1) JVM is part of JRE 2) JRE is part of JVM

JVM is part of JRE

Python can be treated in 1) a procedural way 2) an object-oriented way 3) a functional way 4) all the above

ll the above