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Repairs for security hardware for computers are best fulfilled by an authorized repair/dealer for the computer itself or the third-party security vendor/creator.
firewall is a hardware or software solution to enforce security policies. In the physical security analogy,
anti virus.
3 assests of computer system -hardware -software -printer
A + covers many computer concepts mainly focusing on hardware. Security + covers security only.
Computer security basically refers to the preventive and resistive measures taken to protect information, ensure integrity of the system and to prevent unauthorized access to information or computing resources. Computer security is required to protect hardware, software, sensitive information and it is enforced using software solutions (antivirus, firewall, encryption, digital certificates, authentication and authorization protocols etc) or hardware solutions (firewall, antivirus, biometrics etc). Along with hardware and software security solutions, formulating and enforcing strict policies and educating about threats are very important for computer security.
Kernel mode By A Raju
Physical security measures are things that are done to reduce data theft through physical means. This does not mean, for example, installing a physical firewall (this is logical security, the prevention of data theft over the wire). Physical security means to physically secure the hardware. This may include cages, locked doors and security badges, and even padlocks on workstations to limit the ability to open the cases or remove the case from its physical location.
Network security can be done in a variety of manners. In general, the methods to perform network security involve constantly updating hardware and software to combat potential computer threats.
A physical firewall, router, modem. (if this is for a class then you might have to argue this point, a physical firewall is a piece of equipment but it is still software that does everything.) A lock on the computer case.
Where computer security deals with the processes applied to computer system(s), information security concerns all of the aspects regarding the system of policies and/or procedures for identifying, controlling, and protecting information from unauthorized disclosure. While often synonymous, information security is actually a superset of computer security, encompassing the fields of data security, transmission security, network security, physical security, personal security, and personnel security,
I think what you are asking is what are the disadvantages of becoming a technician. Keeping up to date on technology, software and hardware, and security.