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ISC System Security Certified Practitioner (SSCP) Sample Questions (Q284-Q289):
NEW QUESTION # 284
Name three types of firewalls __________, _______________, and _________________ (Choose three)
- A. SonicWall
- B. Raptor Firewall
- C. Application Proxy
- D. Stateful Inspection
- E. Microsoft Proxy
- F. Packet Filtering
NEW QUESTION # 285
Which of the following can be best defined as computing techniques for inseparably embedding unobtrusive marks or labels as bits in digital data and for detecting or extracting the marks later?
- A. Digital signature
- B. Steganography
- C. Digital watermarking
- D. Digital enveloping
RFC 2828 (Internet Security Glossary) defines digital watermarking as computing techniques for inseparably embedding unobtrusive marks or labels as bits in digital data-text, graphics, images, video, or audio#and for detecting or extracting the marks later. The set of embedded bits (the digital watermark) is sometimes hidden, usually imperceptible, and always intended to be unobtrusive. It is used as a measure to protect intellectual property rights. Steganography involves hiding the very existence of a message. A digital signature is a value computed with a cryptographic algorithm and appended to a data object in such a way that any recipient of the data can use the signature to verify the data's origin and integrity. A digital envelope is a combination of encrypted data and its encryption key in an encrypted form that has been prepared for use of the recipient.
Source: SHIREY, Robert W., RFC2828: Internet Security Glossary, may 2000.
NEW QUESTION # 286
Which of the following rules pertaining to a Business Continuity Plan/Disaster Recovery Plan is incorrect?
- A. In its procedures and tasks, the plan should refer to functions, not specific individuals.
- B. There should be requirements to form a committee to decide a course of action. These decisions should be made ahead of time and incorporated into the plan.
- C. In order to facilitate recovery, a single plan should cover all locations.
- D. Critical vendors should be contacted ahead of time to validate equipment can be obtained in a timely manner.
Section: Risk, Response and Recovery
The first documentation rule when it comes to a BCP/DRP is "one plan, one building". Much of the plan revolves around reconstructing a facility and replenishing it with production contents. If more than one facility is involved, then the reader of the plan will find it difficult to identify quantities and specifications of replacement resource items. It is possible to have multiple plans for a single building, but those plans must be linked so that the identification and ordering of resource items is centralized. All other statements are correct.
Source: BARNES, James C. & ROTHSTEIN, Philip J., A Guide to Business Continuity Planning, John Wiley & Sons, 2001 (page 162).
NEW QUESTION # 287
What can be defined as a momentary low voltage?
- A. Spike
- B. Fault
- C. Brownout
- D. Sag
Section: Risk, Response and Recovery
A sag is a momentary low voltage. A spike is a momentary high voltage. A fault is a momentary power out and a brownout is a prolonged power supply that is below normal voltage.
Source: HARRIS, Shon, All-In-One CISSP Certification Exam Guide, McGraw-Hill/Osborne, 2002, chapter 6:
Physical security (page 299)
NEW QUESTION # 288
Which of the following transmission media would NOT be affected by cross talk or interference?
- A. Fiber optic cables
- B. Copper cable
- C. Radio System
- D. Satellite radiolink
Section: Network and Telecommunications
Only fiber optic cables are not affected by crosstalk or interference.
For your exam you should know the information about transmission media:
Copper cable is very simple to install and easy to tap. It is used mostly for short distance and supports voice and data.
Copper has been used in electric wiring since the invention of the electromagnet and the telegraph in the
1820s.The invention of the telephone in 1876 created further demand for copper wire as an electrical conductor.
Copper is the electrical conductor in many categories of electrical wiring. Copper wire is used in power generation, power transmission, power distribution, telecommunications, electronics circuitry, and countless types of electrical equipment. Copper and its alloys are also used to make electrical contacts. Electrical wiring in buildings is the most important market for the copper industry. Roughly half of all copper mined is used to manufacture electrical wire and cable conductors.
Image Source - http://i00.i.aliimg.com/photo/v0/570456138/FRLS_HR_PVC_Copper_Cable.jpg Coaxial cable Coaxial cable, or coax (pronounced 'ko.aks), is a type of cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield. Many coaxial cables also have an insulating outer sheath or jacket. The term coaxial comes from the inner conductor and the outer shield sharing a geometric axis. Coaxial cable was invented by English engineer and mathematician Oliver Heaviside, who patented the design in 1880.Coaxial cable differs from other shielded cable used for carrying lower-frequency signals, such as audio signals, in that the dimensions of the cable are controlled to give a precise, constant conductor spacing, which is needed for it to function efficiently as a radio frequency transmission line.
Coaxial cable are expensive and does not support many LAN's. It supports data and video Coaxial Cable
Image Source - http://www.tlc-direct.co.uk/Images/Products/size_3/CARG59.JPG Fiber optics An optical fiber cable is a cable containing one or more optical fibers that are used to carry light. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable will be deployed. Different types of cable are used for different applications, for example long distance telecommunication, or providing a high-speed data connection between different parts of a building.
Fiber optics used for long distance, hard to splice, not vulnerable to cross talk and difficult to tap. It supports voice data, image and video.
Radio systems are used for short distance,cheap and easy to tap.
Radio is the radiation (wireless transmission) of electromagnetic signals through the atmosphere or free space.
Information, such as sound, is carried by systematically changing (modulating) some property of the radiated waves, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.
Image Source - http://aboveinfranet.com/wp-content/uploads/2014/04/fiber-optic-cables-above-infranet- solutions.jpg Microwave radio system Microwave transmission refers to the technology of transmitting information or energy by the use of radio waves whose wavelengths are conveniently measured in small numbers of centimetre; these are called microwaves.
Microwaves are widely used for point-to-point communications because their small wavelength allows conveniently-sized antennas to direct them in narrow beams, which can be pointed directly at the receiving antenna. This allows nearby microwave equipment to use the same frequencies without interfering with each other, as lower frequency radio waves do. Another advantage is that the high frequency of microwaves gives the microwave band a very large information-carrying capacity; the microwave band has a bandwidth 30 times that of all the rest of the radio spectrum below it. A disadvantage is that microwaves are limited to line of sight propagation; they cannot pass around hills or mountains as lower frequency radio waves can.
Microwave radio transmission is commonly used in point-to-point communication systems on the surface of the Earth, in satellite communications, and in deep space radio communications. Other parts of the microwave radio band are used for radars, radio navigation systems, sensor systems, and radio astronomy.
Microwave radio systems are carriers for voice data signal, cheap and easy to tap.
Microwave Radio System
Image Source - http://www.valiantcom.com/images/applications/e1_digital_microwave_radio.gif Satellite Radio Link Satellite radio is a radio service broadcast from satellites primarily to cars, with the signal broadcast nationwide, across a much wider geographical area than terrestrial radio stations. It is available by subscription, mostly commercial free, and offers subscribers more stations and a wider variety of programming options than terrestrial radio.
Satellite radio link uses transponder to send information and easy to tap.
The following answers are incorrect:
Copper Cable - Copper cable is very simple to install and easy to tap. It is used mostly for short distance and supports voice and data.
Radio System - Radio systems are used for short distance,cheap and easy to tap.
Satellite Radio Link - Satellite radio link uses transponder to send information and easy to tap.
The following reference(s) were/was used to create this question:
CISA review manual 2014 page number 265 &
Official ISC2 guide to CISSP CBK 3rd Edition Page number 233
NEW QUESTION # 289
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