Information Security Solved MCQs


This technology is used to measure and analyze human body characteristics for authentication purposes.

A. Footprinting
B. Biometrics
D. Anthropomorphism
Answer» B. Biometrics

__________ is an electronic or paper log used to track computer activity.

A. Traceroute
B. Cookie
C. Weblog
D. Audit trail
Answer» D. Audit trail

This is a series of messages sent by someone attempting to break into a computer to learn which computer network services the computer provides.

A. Bit robbing
B. Web services description language (WSDL)
C. Jabber
D. Port scan
Answer» D. Port scan

This is the name for a group of programmers who are hired to expose errors or security holes in new software or to find out why a computer network's security is being broken.

A. ERM group
B. Computer emergency response tea
C. Tiger team
D. Silicone cockroach
Answer» C. Tiger team

This is a mechanism for ensuring that only authorized users can copy or use specific software applications.

A. Authorized program analysis report
B. Private key
C. Service level agreement
D. Dongle
Answer» D. Dongle

At which two traffic layers do most commercial IDSes generate signatures?

A. Application layer
B. Network layer
C. Session layer
D. Transport layer
Answer» B. Network layer

This is a Peripheral Component Interconnect (PCI) card that offloads SSL processing to speed up secure transactions on e-commerce Web sites.

A. PCMCIA card
B. Smart card
C. Server accelerator card
D. Network interface card
Answer» C. Server accelerator card

___________is a form of eavesdropping used to pick up telecommunication signals by monitoring the electromagnetic fields produced by the signals.

A. Reverse engineering
B. Magneto resistive head technology
C. Van Eck phreaking
D. Electronic data processing (EDP)
Answer» C. Van Eck phreaking

This enables users of a basically unsecure public network such as the Internet to securely and privately exchange data and money through the use of a public and a private cryptographic key pair that is obtained and shared through a trusted authority.

A. Security Identifier (SID)
B. Public key infrastructure (PKI)
C. Internet Assigned Numbers Authority (IANA)
D. Private Branch Exchange (PBX)
Answer» B. Public key infrastructure (PKI)

This is an assault on the integrity of a security system in which the attacker substitutes a section of cipher text (encrypted text) with a different section that looks like (but is not the same as) the one removed.

A. Trojan horse
B. Hashing
C. Switching fabric
D. Cut and paste attack
Answer» D. Cut and paste attack

Which of the following is an advantage of anomaly detection?

A. Rules are easy to define.
B. Custom protocols can be easily analyzed.
C. The engine can scale as the rule set grows.
D. Malicious activity that falls within normal usage patterns is detected.
Answer» C. The engine can scale as the rule set grows.

A false positive can be defined as…

A. An alert that indicates nefarious activity on a system that, upon further inspection, turns out to represent legitimate network traffic or behavior.
B. An alert that indicates nefarious activity on a system that is not running on the network.
C. The lack of an alert for nefarious activity.
D. Both a. and b.
Answer» D. Both a. and b.

This is an encryption/decryption key known only to the party or parties that exchange secret messages.

A. E-signature
B. Digital certificate
C. Private key
D. Security token
Answer» C. Private key

What is the purpose of a shadow honeypot?

A. To flag attacks against known vulnerabilities
B. To help reduce false positives in a signature-based IDS.
C. To randomly check suspicious traffic identified by an anomaly detection system.
D. To enhance the accuracy of a traditional honeypot.
Answer» C. To randomly check suspicious traffic identified by an anomaly detection system.

This is is the hiding of a secret message within an ordinary message and the extraction of it at its destination.

A. Secret key algorithm
B. Message queuing
C. Spyware
D. Steganography
Answer» D. Steganography

An IDS follows a two-step process consisting of a passive component and an active component. Which of the following is part of the active component?

A. Inspection of password files to detect inadvisable passwords
B. Mechanisms put in place to reenact known methods of attack and record system responses
C. Inspection of system to detect policy violations
D. Inspection of configuration files to detect inadvisable settings
Answer» B. Mechanisms put in place to reenact known methods of attack and record system responses

When discussing IDS/IPS, what is a signature?

A. An electronic signature used to authenticate the identity of a user on the network
B. Attack-definition file
C. It refers to "normal," baseline network behavior
D. None of the above
Answer» B. Attack-definition file

"Semantics-aware" signatures automatically generated by Nemean are based on traffic at which two layers?

A. Application layer
B. Network layer
C. Session layer
D. Both a and c
Answer» D. Both a and c

In what type of attack does an intruder manipulate a URL in such a way that the Web server executes or reveals the contents of a file anywhere on the server, including those lying outside the document root directory?

A. Cross-site scripting
B. Command injection
C. SQL injection
D. Path traversal attacks
Answer» D. Path traversal attacks

Which of the following is true of improper error handling?

A. Attackers can use error messages to extract specific information from a system.
B. Attackers can use unexpected errors to knock an application off line, creating a denial-of- service attack.
C. Unexpected errors can provide an attacker with a buffer or stack overflow condition that sets the stage for an arbitrary code execution.
D. All of the above.
Answer» D. All of the above.

Which of the following is NOT recommended for securing Web applications against authenticated users?

A. Client-side data validation
B. Filtering data with a default deny regular expression
C. Running the application under least privileges necessary
D. Using parameterized queries to access a database
Answer» A. Client-side data validation

In which of the following exploits does an attacker insert malicious coding into a link that appears to be from a trustworthy source?

A. Cross-site scripting
B. Command injection
C. Path traversal attack
D. Buffer overflow
Answer» A. Cross-site scripting

In which of the following exploits does an attacker add SQL code to a Web form input box to gain access to resources or make changes to data?

A. Cross-site scripting
B. Command injection
C. SQL injection
D. Buffer overflow
Answer» C. SQL injection

Which of the following is characteristic of spyware?

A. Blocking access to antivirus and antispyware updates
B. Aggregating surfing habits across multiple users for advertising
C. Customizing search results based on an advertiser's needs
D. All of the above
Answer» B. Aggregating surfing habits across multiple users for advertising

One of the most obvious places to put an IDS sensor is near the firewall. Where exactly in relation to the firewall is the most productive placement?

A. Inside the firewall
B. Outside the firewall
C. Both
D. None
Answer» A. Inside the firewall

This was commonly used in cryptography during World War II.

A. Tunneling
B. Personalization
C. Van Eck phreaking
D. One-time pad
Answer» D. One-time pad

Today, many Internet businesses and users take advantage of cryptography based on this approach.

A. Public key infrastructure
B. Output feedback
C. Encrypting File System
D. Single sign on
Answer» A. Public key infrastructure

This is the name for the issuer of a PKI certificate.

A. Man in the middle
B. Certificate authority
C. Resource Access Control Facility
D. Script kiddy
Answer» B. Certificate authority

Developed by Philip R. Zimmermann, this is the most widely used privacy-ensuring program by individuals and is also used by many corporations.

C. Secure HTTP
D. Pretty Good Privacy
Answer» D. Pretty Good Privacy

This is the encryption algorithm that will begin to supplant the Data Encryption Standard (DES) - and later Triple DES - over the next few years as the new standard encryption algorithm.

A. Rijndael
B. Kerberos
C. Blowfish
D. IPsec
Answer» A. Rijndael

This is the inclusion of a secret message in otherwise unencrypted text or images.

A. Masquerade
B. Steganography
C. Spoof
D. Eye-in-hand system
Answer» B. Steganography

In password protection, this is a random string of data used to modify a password hash.

A. Sheepdip
B. Salt
C. Bypass
D. Dongle
Answer» B. Salt

This is a mode of operation for a block cipher, with the characteristic that each possible block of plaintext has a defined corresponding cipher text value and vice versa.

A. Foot printing
B. Hash function
C. Watermark
D. Electronic Code Book
Answer» D. Electronic Code Book

This is a trial and error method used to decode encrypted data through exhaustive effort rather than employing intellectual strategies.

A. Chaffing and winnowing
B. Cryptanalysis
C. Serendipity
D. Brute force cracking
Answer» D. Brute force cracking

An intruder might install this on a networked computer to collect user ids and passwords from other machines on the network.

A. Passphrase
B. Root kit
C. Ownership tag
D. Token
Answer» B. Root kit

This type of intrusion relies on the intruder's ability to trick people into breaking normal security procedures.

A. Shoulder surfing
B. Hijacking
C. Brain fingerprinting
D. Social engineering
Answer» D. Social engineering

The developers of an operating system or vendor application might issue this to prevent intruders from taking advantage of a weakness in their programming.

A. Cookie
B. Key fob
C. Watermark
D. Patch
Answer» D. Patch

This is an attack on a computer system that takes advantage of a particular vulnerability that the system offers to intruders.

A. Port scan
B. Denial of service
C. Exploit
D. Logic bomb
Answer» C. Exploit

This is a program in which harmful code is contained inside apparently harmless programming or data.

A. Snort
B. Honeypot
C. Blue bomb
D. Trojan horse
Answer» D. Trojan horse

This is the modification of personal information on a Web user's computer to gain unauthorized information with which to obtain access to the user's existing accounts.

A. Identity theft
B. Cookie poisoning
C. Shoulder surfing
D. Relative identifier
Answer» B. Cookie poisoning

This type of attack may cause additional damage by sending data containing codes designed to trigger specific actions - for example, changing data or disclosing confidential information.

A. Buffer overflow
B. Block cipher
C. War dialing
D. Distributed denial-of-service attack
Answer» A. Buffer overflow

This is the forging of an e-mail header so that the message appears to have originated from someone or somewhere other than the actual source.

A. Foot printing
B. Non repudiation
C. E-mail spoofing
D. Finger
Answer» C. E-mail spoofing

This is a type of network security attack in which the intruder takes control of a communication between two entities and masquerades as one of them.

A. Hijacking
B. Identity theft
C. Smurf attack
D. Tunneling
Answer» A. Hijacking

This is a compromised Web site that is being used as an attack launch point in a denialof-service attack.

A. Bastion host
B. Packet monkey
C. Dongle
D. Zombie
Answer» D. Zombie

This electronic "credit card" establishes a user's credentials when doing business or other transactions on the Web and is issued by a certification authority.

A. Private key
B. Digital certificate
C. Smart card
D. Ownership tag
Answer» B. Digital certificate

What "layer" of an e-mail message should you consider when evaluating e-mail security?

C. Body
D. All of the above
Answer» D. All of the above
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