Deck 3: Network Security

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Question
Which of the following sometimes uses direct propagation between computers?

A)viruses
B)worms
C)Trojan horses
D)downloaders
Use Space or
up arrow
down arrow
to flip the card.
Question
Mobile code is another name for ________.

A)virus
B)worm
C)both A and B
D)neither A nor B
Question
Small malware programs that download larger malware programs are called ________.

A)downloaders
B)scouts
C)foothold programs
D)stage-one programs
Question
The Target attackers probably first broke into Target using the credentials of a(n)________.

A)low-level Target employee
B)Target IT employee
C)Target security employee
D)employee in a firm outside Target
Question
Which of the following can spread more rapidly?

A)directly-propagating viruses
B)directly-propagating worms
C)Both of the above can spread with approximately equal speed.
Question
The general name for evil software is ________.

A)virus
B)worm
C)exploit
D)malware
Question
A program that can capture passwords as you enter them is ________.

A)a keystroke logger
B)data mining software
C)both A and B
D)neither A nor B
Question
The Target attackers sold their stolen card information to ________.

A)crimeware shops
B)card shops
C)card counterfeiters
D)Hallmark
Question
The general name for malware on a user's PC that collects sensitive information and sends this information to an attacker is ________.

A)keystroke loggers
B)anti-privacy software
C)spyware
D)data mining software
Question
Vulnerability-based attacks that occur before a patch is available are called ________ attacks.

A)preinstallation
B)stealth
C)malware
D)zero-day
Question
Which of the following attach themselves to other programs?

A)Viruses
B)Worms
C)both A and B
D)neither A nor B
Question
The general name for a security flaw in a program is a ________.

A)virus
B)malware
C)security fault
D)vulnerability
Question
________ are full programs.

A)Viruses
B)Worms
C)both A and B
D)neither A nor B
Question
Malware programs that masquerade as system files are called ________.

A)viruses
B)scripts
C)payloads
D)Trojan horses
Question
Which of the following probably suffered the most financial damage from the Target breach?

A)retailers other than Target
B)banks
C)consumers
D)POS terminal vendors
Question
A ________ is a flaw in a program that permits a specific attack or set of attacks against this problem.

A)malware
B)security error
C)vulnerability
D)security fault
Question
Users typically can eliminate a vulnerability in one of their programs by ________.

A)installing a patch
B)doing a zero-day installation
C)using an antivirus program
D)all of the above
Question
Trojan horses can spread by ________.

A)e-mailing themselves to victim computers
B)directly propagating to victim computers
C)both A and B
D)neither A nor B
Question
Viruses most commonly spread from one computer to another ________.

A)via e-mail
B)by propagating directly by themselves
C)through obfuscation
D)all of the above
Question
Which of the following probably suffered the most financial damage from the Target breach?

A)Target
B)banks
C)consumers
D)POS vendors
Question
In distributed DoS attacks,the attacker sends messages directly to ________.

A)bots
B)the intended victim of the DoS attack
C)a command and control server
D)DOS servers
Question
Pieces of code that are executed after the virus or worm has spread are called ________.

A)vulnerabilities
B)exploits
C)compromises
D)payloads
Question
An attack in which an authentic-looking e-mail or website entices a user to enter his or her username,password,or other sensitive information is called ________.(Select the most specific answer.)

A)phishing
B)identity theft
C)social engineering
D)a spyware attack
Question
Unsolicited commercial e-mail is better known as ________.

A)spam
B)adware
C)social engineering
D)identity theft
Question
Which of the following can be upgraded after it is installed on a victim computer? (Choose the most specific answer.)

A)Trojan horses
B)bots
C)viruses
D)worms
Question
Attack programs that can be remotely controlled by an attacker are ________.

A)bots
B)DoS programs
C)exploits
D)sock puppets
Question
Which of the following meets the definition of hacking ________.

A)to intentionally use a computer resource without authorization
B)to use a computer on which you have an account for unauthorized purposes
C)both A and B
D)neither A nor B
Question
Methods that hackers use to break into computers are ________.

A)cracks
B)magics
C)exploits
D)compromises
Question
Tricking users into doing something against their security interests is ________.

A)social engineering
B)hacking
C)both A and B
D)neither A nor B
Question
Credit card number thieves are called ________.(Pick the most precise answer.)

A)numbers racketeers
B)fraudsters
C)identity thieves
D)carders
Question
What type of attacker can do the most damage?

A)criminal attackers
B)hackers driven by curiosity
C)employees and ex-employees
D)national governments
Question
What type of attacker are most of attackers today?

A)disgruntled employees and ex-employees
B)career criminals
C)hackers motivated by a sense of power
D)cyberterrorists
Question
Which of the following tends to be more damaging to the victim?

A)credit card theft
B)identity theft
C)Both are about equally damaging to the victim.
D)Neither is damaging to the victim.
Question
Advanced persistent threats are ________.

A)inexpensive for the attacker
B)extremely dangerous for the victim
C)both A and B
D)neither A nor B
Question
An attack aimed at a single person or a small group of individuals is a(n)________ attack.(Choose the most specific answer.)

A)phishing
B)spear phishing
C)highly targeted
D)customized
Question
A specific encryption method is called a ________.

A)code
B)schema
C)key method
D)cipher
Question
Who are the most dangerous types of employees?

A)financial employees
B)manufacturing employees
C)IT security employees
D)former employees
Question
If you see a username and password on a Post-It note that anyone can see on a monitor,is it hacking if you use this information to log in?

A)Yes
B)No
C)We cannot say from the information given.
Question
DoS attacks attempt to ________.

A)hack a computer
B)reduce the availability of a computer
C)steal information from a computer
D)delete files on a computer
Question
You discover that you can get into other e-mail accounts after you have logged in under your account.You spend just a few minutes looking at another user's mail.Is that hacking?

A)Yes
B)No
C)We cannot say from the information given.
Question
A user picks the password "tiger." This is likely to be cracked quickly by a(n)________.

A)attack on an application running as root
B)brute-force attack
C)dictionary attack
D)reverse engineering attack
Question
Electronic signatures also provide ________ in addition to authentication.

A)message integrity
B)message encryption
C)both A and B
D)neither A nor B
Question
The password "R7%t&" can be defeated by a ________.

A)dictionary attack
B)hybrid mode dictionary attack
C)brute-force attack
D)All of the above could defeat the password equally quickly.
Question
In authentication,the ________ is the party trying to prove his or her identity.

A)supplicant
B)verifier
C)true party
D)all of the above
Question
SSL/TLS is used for ________.

A)Web applications
B)any application
C)both A and B
D)neither A nor B
Question
The password "NeVEr" can be defeated by a ________.

A)dictionary attack
B)hybrid dictionary attack
C)brute-force attack
D)none of the above
Question
Passwords are widely used because they ________.

A)are demanded by users
B)offer strong authentication
C)are the only authentication techniques known by most security professionals
D)are inexpensive to use
Question
Requiring someone to use a resource to prove his or her identity is ________.

A)confidentiality
B)authentication
C)authorization
D)both B and C
Question
________ is the general name for proofs of identity in authentication.

A)Credentials
B)Authorizations
C)Certificates
D)Signatures
Question
Using encryption,you make it impossible for attackers to read your messages even if they intercept them.This is ________.

A)authentication
B)confidentiality
C)both A and B
D)neither A nor B
Question
In symmetric key encryption,a key must be ________ bits long,or longer,to be considered strong.(Choose the choice closest to the correct answer.)

A)36
B)56
C)64
D)128
Question
Using SSL/TLS for Web applications is attractive because SSL/TLS ________.

A)is essentially free to use
B)offers the strongest possible cryptographic protections
C)both A and B
D)neither A nor B
Question
The messages of VPNs ________.

A)share the same transmission lines
B)are encrypted
C)both A and B
D)neither A nor B
Question
To defeat brute-force attacks,a password must be ________.

A)long
B)complex
C)both A and B
D)neither A nor B
Question
Electronic signatures provide message-by-message ________.

A)authentication
B)confidentiality
C)both A and B
D)neither A nor B
Question
The password "velociraptor" can be defeated most quickly by a ________.

A)dictionary attack
B)reverse engineering attack
C)brute-force attack
D)None of the above because it is more than 8 characters long.
Question
Authentication should generally be ________.

A)as strong as possible
B)appropriate for a specific resource
C)the same for all resources, for consistency
D)all of the above
Question
Prepare2 can be cracked most quickly by a(n)________.

A)authentication attack
B)brute-force attack
C)dictionary attack
D)hybrid dictionary attack
Question
A password-cracking attack that tries all combinations of keyboard characters is called a ________.

A)dictionary attack
B)hybrid mode dictionary attack
C)brute-force attack
D)comprehensive keyboard attack
Question
In two-way dialogues using symmetric key encryption,how many keys are used for encryption and decryption?

A)1
B)2
C)4
D)none of the above
Question
A firewall will drop a packet if it ________.

A)is a definite attack packet
B)is a probable attack packet
C)both A and B
D)neither A nor B
Question
When a packet that is part of an ongoing connection arrives at a stateful inspection firewall,the firewall usually ________.

A)drops the packet
B)drops the packet and notifies an administrator
C)passes the packet
D)passes the packet, but notifies an administrator
Question
In digital certificate authentication,the verifier uses ________.

A)the supplicant's public key
B)the true party's public key
C)both A and B
D)neither A nor B
Question
How will a stateful packet inspection (SPI)firewall handle a packet containing a TCP SYN segment?

A)process it through the Access Control List (ACL)
B)pass it if it is part of an approved connection
C)both A and B
D)neither A nor B
Question
In digital certificate authentication,the supplicant encrypts the challenge message with ________.

A)the supplicant's private key
B)the verifier's private key
C)the true party's private key
D)none of the above
Question
How will a stateful packet inspection (SPI)firewall handle a packet containing a TCP segment which is an acknowledgement?

A)process it through the Access Control List (ACL)
B)pass it if it is part of an approved connection
C)both A and B
D)neither A nor B
Question
Iris scanning is attractive because of its ________.

A)low cost
B)precision
C)both A and B
D)neither A nor B
Question
How will a stateful packet inspection (SPI)firewall handle a packet containing a TCP FIN segment?

A)process it through the Access Control List (ACL)
B)pass it if it is part of an approved connection
C)both A and B
D)neither A nor B
Question
Firewall log files should be read ________.

A)every month
B)every day
C)every week
D)usually only when a serious attack is suspected
Question
The digital certificate provides the ________.

A)private key of the supplicant
B)private key of the true party
C)public key of the supplicant
D)none of the above
Question
________ is the dominant firewall filtering method used on main border firewalls today.

A)ACL filtering
B)Application content filtering
C)Stateful packet inspection
D)none of the above
Question
Egress filtering examines packets ________.

A)arriving from the outside
B)leaving to the outside
C)both A and B
D)neither A nor B
Question
ACLs are used for packets in the ________ state.

A)connection-opening
B)ongoing communication
C)both A and B
D)neither A nor B
Question
When a packet that is not part of an ongoing connection and that does not attempt to open a connection arrives at a stateful inspection firewall,the firewall ________.(Read this question carefully.)

A)drops the packet
B)passes the packet
C)opens a new connection
D)does not approve the connection
Question
Stateful firewalls are attractive because of their ________.

A)high filtering sophistication
B)ability to filter complex application content
C)QoS guarantees
D)low cost
Question
Debit card is secure because it requires two credentials for authentication.This is also called ________.

A)the supplicant's authentication
B)the verifier's authentication
C)two-factor authentication
D)none of the above
Question
When a firewall identifies an attack packet,it ________.

A)discards the packet
B)copies information about the packet into a log file
C)both A and B
D)neither A nor B
Question
Which of the following is a form of biometrics?

A)reusable passwords
B)digital certificate authentication
C)facial recognition
D)all of the above
Question
In digital certificate authentication,the verifier gets the key it needs directly from the ________.

A)supplicant
B)verifier
C)true party
D)certificate authority
Question
Which of the following can be done today without the target's knowledge?

A)iris scanning
B)face recognition
C)both A and B
D)neither A nor B
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Deck 3: Network Security
1
Which of the following sometimes uses direct propagation between computers?

A)viruses
B)worms
C)Trojan horses
D)downloaders
B
2
Mobile code is another name for ________.

A)virus
B)worm
C)both A and B
D)neither A nor B
D
3
Small malware programs that download larger malware programs are called ________.

A)downloaders
B)scouts
C)foothold programs
D)stage-one programs
A
4
The Target attackers probably first broke into Target using the credentials of a(n)________.

A)low-level Target employee
B)Target IT employee
C)Target security employee
D)employee in a firm outside Target
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
5
Which of the following can spread more rapidly?

A)directly-propagating viruses
B)directly-propagating worms
C)Both of the above can spread with approximately equal speed.
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
6
The general name for evil software is ________.

A)virus
B)worm
C)exploit
D)malware
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
7
A program that can capture passwords as you enter them is ________.

A)a keystroke logger
B)data mining software
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
8
The Target attackers sold their stolen card information to ________.

A)crimeware shops
B)card shops
C)card counterfeiters
D)Hallmark
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
9
The general name for malware on a user's PC that collects sensitive information and sends this information to an attacker is ________.

A)keystroke loggers
B)anti-privacy software
C)spyware
D)data mining software
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
10
Vulnerability-based attacks that occur before a patch is available are called ________ attacks.

A)preinstallation
B)stealth
C)malware
D)zero-day
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
11
Which of the following attach themselves to other programs?

A)Viruses
B)Worms
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
12
The general name for a security flaw in a program is a ________.

A)virus
B)malware
C)security fault
D)vulnerability
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
13
________ are full programs.

A)Viruses
B)Worms
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
14
Malware programs that masquerade as system files are called ________.

A)viruses
B)scripts
C)payloads
D)Trojan horses
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
15
Which of the following probably suffered the most financial damage from the Target breach?

A)retailers other than Target
B)banks
C)consumers
D)POS terminal vendors
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
16
A ________ is a flaw in a program that permits a specific attack or set of attacks against this problem.

A)malware
B)security error
C)vulnerability
D)security fault
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
17
Users typically can eliminate a vulnerability in one of their programs by ________.

A)installing a patch
B)doing a zero-day installation
C)using an antivirus program
D)all of the above
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
18
Trojan horses can spread by ________.

A)e-mailing themselves to victim computers
B)directly propagating to victim computers
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
19
Viruses most commonly spread from one computer to another ________.

A)via e-mail
B)by propagating directly by themselves
C)through obfuscation
D)all of the above
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
20
Which of the following probably suffered the most financial damage from the Target breach?

A)Target
B)banks
C)consumers
D)POS vendors
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
21
In distributed DoS attacks,the attacker sends messages directly to ________.

A)bots
B)the intended victim of the DoS attack
C)a command and control server
D)DOS servers
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
22
Pieces of code that are executed after the virus or worm has spread are called ________.

A)vulnerabilities
B)exploits
C)compromises
D)payloads
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
23
An attack in which an authentic-looking e-mail or website entices a user to enter his or her username,password,or other sensitive information is called ________.(Select the most specific answer.)

A)phishing
B)identity theft
C)social engineering
D)a spyware attack
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
24
Unsolicited commercial e-mail is better known as ________.

A)spam
B)adware
C)social engineering
D)identity theft
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
25
Which of the following can be upgraded after it is installed on a victim computer? (Choose the most specific answer.)

A)Trojan horses
B)bots
C)viruses
D)worms
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
26
Attack programs that can be remotely controlled by an attacker are ________.

A)bots
B)DoS programs
C)exploits
D)sock puppets
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
27
Which of the following meets the definition of hacking ________.

A)to intentionally use a computer resource without authorization
B)to use a computer on which you have an account for unauthorized purposes
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
28
Methods that hackers use to break into computers are ________.

A)cracks
B)magics
C)exploits
D)compromises
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
29
Tricking users into doing something against their security interests is ________.

A)social engineering
B)hacking
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
30
Credit card number thieves are called ________.(Pick the most precise answer.)

A)numbers racketeers
B)fraudsters
C)identity thieves
D)carders
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
31
What type of attacker can do the most damage?

A)criminal attackers
B)hackers driven by curiosity
C)employees and ex-employees
D)national governments
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
32
What type of attacker are most of attackers today?

A)disgruntled employees and ex-employees
B)career criminals
C)hackers motivated by a sense of power
D)cyberterrorists
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
33
Which of the following tends to be more damaging to the victim?

A)credit card theft
B)identity theft
C)Both are about equally damaging to the victim.
D)Neither is damaging to the victim.
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
34
Advanced persistent threats are ________.

A)inexpensive for the attacker
B)extremely dangerous for the victim
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
35
An attack aimed at a single person or a small group of individuals is a(n)________ attack.(Choose the most specific answer.)

A)phishing
B)spear phishing
C)highly targeted
D)customized
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
36
A specific encryption method is called a ________.

A)code
B)schema
C)key method
D)cipher
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
37
Who are the most dangerous types of employees?

A)financial employees
B)manufacturing employees
C)IT security employees
D)former employees
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
38
If you see a username and password on a Post-It note that anyone can see on a monitor,is it hacking if you use this information to log in?

A)Yes
B)No
C)We cannot say from the information given.
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
39
DoS attacks attempt to ________.

A)hack a computer
B)reduce the availability of a computer
C)steal information from a computer
D)delete files on a computer
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
40
You discover that you can get into other e-mail accounts after you have logged in under your account.You spend just a few minutes looking at another user's mail.Is that hacking?

A)Yes
B)No
C)We cannot say from the information given.
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
41
A user picks the password "tiger." This is likely to be cracked quickly by a(n)________.

A)attack on an application running as root
B)brute-force attack
C)dictionary attack
D)reverse engineering attack
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
42
Electronic signatures also provide ________ in addition to authentication.

A)message integrity
B)message encryption
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
43
The password "R7%t&" can be defeated by a ________.

A)dictionary attack
B)hybrid mode dictionary attack
C)brute-force attack
D)All of the above could defeat the password equally quickly.
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
44
In authentication,the ________ is the party trying to prove his or her identity.

A)supplicant
B)verifier
C)true party
D)all of the above
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
45
SSL/TLS is used for ________.

A)Web applications
B)any application
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
46
The password "NeVEr" can be defeated by a ________.

A)dictionary attack
B)hybrid dictionary attack
C)brute-force attack
D)none of the above
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
47
Passwords are widely used because they ________.

A)are demanded by users
B)offer strong authentication
C)are the only authentication techniques known by most security professionals
D)are inexpensive to use
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
48
Requiring someone to use a resource to prove his or her identity is ________.

A)confidentiality
B)authentication
C)authorization
D)both B and C
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
49
________ is the general name for proofs of identity in authentication.

A)Credentials
B)Authorizations
C)Certificates
D)Signatures
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
50
Using encryption,you make it impossible for attackers to read your messages even if they intercept them.This is ________.

A)authentication
B)confidentiality
C)both A and B
D)neither A nor B
Unlock Deck
Unlock for access to all 88 flashcards in this deck.
Unlock Deck
k this deck
51
In symmetric key encryption,a key must be ________ bits long,or longer,to be considered strong.(Choose the choice closest to the correct answer.)

A)36
B)56
C)64
D)128
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52
Using SSL/TLS for Web applications is attractive because SSL/TLS ________.

A)is essentially free to use
B)offers the strongest possible cryptographic protections
C)both A and B
D)neither A nor B
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53
The messages of VPNs ________.

A)share the same transmission lines
B)are encrypted
C)both A and B
D)neither A nor B
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54
To defeat brute-force attacks,a password must be ________.

A)long
B)complex
C)both A and B
D)neither A nor B
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55
Electronic signatures provide message-by-message ________.

A)authentication
B)confidentiality
C)both A and B
D)neither A nor B
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56
The password "velociraptor" can be defeated most quickly by a ________.

A)dictionary attack
B)reverse engineering attack
C)brute-force attack
D)None of the above because it is more than 8 characters long.
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57
Authentication should generally be ________.

A)as strong as possible
B)appropriate for a specific resource
C)the same for all resources, for consistency
D)all of the above
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58
Prepare2 can be cracked most quickly by a(n)________.

A)authentication attack
B)brute-force attack
C)dictionary attack
D)hybrid dictionary attack
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59
A password-cracking attack that tries all combinations of keyboard characters is called a ________.

A)dictionary attack
B)hybrid mode dictionary attack
C)brute-force attack
D)comprehensive keyboard attack
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60
In two-way dialogues using symmetric key encryption,how many keys are used for encryption and decryption?

A)1
B)2
C)4
D)none of the above
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61
A firewall will drop a packet if it ________.

A)is a definite attack packet
B)is a probable attack packet
C)both A and B
D)neither A nor B
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62
When a packet that is part of an ongoing connection arrives at a stateful inspection firewall,the firewall usually ________.

A)drops the packet
B)drops the packet and notifies an administrator
C)passes the packet
D)passes the packet, but notifies an administrator
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63
In digital certificate authentication,the verifier uses ________.

A)the supplicant's public key
B)the true party's public key
C)both A and B
D)neither A nor B
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64
How will a stateful packet inspection (SPI)firewall handle a packet containing a TCP SYN segment?

A)process it through the Access Control List (ACL)
B)pass it if it is part of an approved connection
C)both A and B
D)neither A nor B
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65
In digital certificate authentication,the supplicant encrypts the challenge message with ________.

A)the supplicant's private key
B)the verifier's private key
C)the true party's private key
D)none of the above
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66
How will a stateful packet inspection (SPI)firewall handle a packet containing a TCP segment which is an acknowledgement?

A)process it through the Access Control List (ACL)
B)pass it if it is part of an approved connection
C)both A and B
D)neither A nor B
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67
Iris scanning is attractive because of its ________.

A)low cost
B)precision
C)both A and B
D)neither A nor B
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68
How will a stateful packet inspection (SPI)firewall handle a packet containing a TCP FIN segment?

A)process it through the Access Control List (ACL)
B)pass it if it is part of an approved connection
C)both A and B
D)neither A nor B
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69
Firewall log files should be read ________.

A)every month
B)every day
C)every week
D)usually only when a serious attack is suspected
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70
The digital certificate provides the ________.

A)private key of the supplicant
B)private key of the true party
C)public key of the supplicant
D)none of the above
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71
________ is the dominant firewall filtering method used on main border firewalls today.

A)ACL filtering
B)Application content filtering
C)Stateful packet inspection
D)none of the above
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72
Egress filtering examines packets ________.

A)arriving from the outside
B)leaving to the outside
C)both A and B
D)neither A nor B
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73
ACLs are used for packets in the ________ state.

A)connection-opening
B)ongoing communication
C)both A and B
D)neither A nor B
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74
When a packet that is not part of an ongoing connection and that does not attempt to open a connection arrives at a stateful inspection firewall,the firewall ________.(Read this question carefully.)

A)drops the packet
B)passes the packet
C)opens a new connection
D)does not approve the connection
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75
Stateful firewalls are attractive because of their ________.

A)high filtering sophistication
B)ability to filter complex application content
C)QoS guarantees
D)low cost
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76
Debit card is secure because it requires two credentials for authentication.This is also called ________.

A)the supplicant's authentication
B)the verifier's authentication
C)two-factor authentication
D)none of the above
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77
When a firewall identifies an attack packet,it ________.

A)discards the packet
B)copies information about the packet into a log file
C)both A and B
D)neither A nor B
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78
Which of the following is a form of biometrics?

A)reusable passwords
B)digital certificate authentication
C)facial recognition
D)all of the above
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79
In digital certificate authentication,the verifier gets the key it needs directly from the ________.

A)supplicant
B)verifier
C)true party
D)certificate authority
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80
Which of the following can be done today without the target's knowledge?

A)iris scanning
B)face recognition
C)both A and B
D)neither A nor B
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Unlock Deck
Unlock for access to all 88 flashcards in this deck.