CTSP EXAMS SCRIPT QUESTIONS AND ANSWERS GRADED
A+
✔✔Backdoors - ✔✔used in computer programs to bypass normal authentication and
other security mechanisms in place
✔✔Logic Bomb - ✔✔code that has been inserted into software; it is meant to initiate
one of many types of malicious functions when specific criteria are met
✔✔Time Bomb - ✔✔trojans set off on a certain date
✔✔Open Mail Relay - ✔✔enables anyone on the internet to send e-mail through the
SMTP server; should either be closed or configured in such a way that only customers
and properly authenticated users can use them
✔✔Types of Viruses - ✔✔-boot sector
-macro
-program
-encrypted
-polymorphic
-metamorphic
-stealth
-armored
-multipartite
✔✔Boot Sector - ✔✔initially loads into the first sector of the hard drive; when the
computer boots, the virus then loads into memory
✔✔Macro - ✔✔usually placed in documents and e-mailed to users in the hopes that the
users will open the document, thus executing the virus
✔✔Program - ✔✔infects executable files
✔✔Encrypted - ✔✔uses a simple cipher to encrypt itself; the virus consists of an
encrypted copy of the virus code (to help avoid detection) and a small decryption
module
✔✔Polymorphic - ✔✔builds on the concept of an encrypted virus, but the decrypting
module is modified with each infection; it can change every time it is executed in an
attempt to avoid antivirus detection
✔✔Metamorphic - ✔✔similar to polymorphic but rewrites itself completely each time it is
going to infect a new file in a further attempt to avoid detection
A+
✔✔Backdoors - ✔✔used in computer programs to bypass normal authentication and
other security mechanisms in place
✔✔Logic Bomb - ✔✔code that has been inserted into software; it is meant to initiate
one of many types of malicious functions when specific criteria are met
✔✔Time Bomb - ✔✔trojans set off on a certain date
✔✔Open Mail Relay - ✔✔enables anyone on the internet to send e-mail through the
SMTP server; should either be closed or configured in such a way that only customers
and properly authenticated users can use them
✔✔Types of Viruses - ✔✔-boot sector
-macro
-program
-encrypted
-polymorphic
-metamorphic
-stealth
-armored
-multipartite
✔✔Boot Sector - ✔✔initially loads into the first sector of the hard drive; when the
computer boots, the virus then loads into memory
✔✔Macro - ✔✔usually placed in documents and e-mailed to users in the hopes that the
users will open the document, thus executing the virus
✔✔Program - ✔✔infects executable files
✔✔Encrypted - ✔✔uses a simple cipher to encrypt itself; the virus consists of an
encrypted copy of the virus code (to help avoid detection) and a small decryption
module
✔✔Polymorphic - ✔✔builds on the concept of an encrypted virus, but the decrypting
module is modified with each infection; it can change every time it is executed in an
attempt to avoid antivirus detection
✔✔Metamorphic - ✔✔similar to polymorphic but rewrites itself completely each time it is
going to infect a new file in a further attempt to avoid detection
