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11 Cards in this Set
- Front
- Back
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What is LDAP?
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Lightweight Directory Access Protocol
Protocol used for accessing and maintaining directory information services over an IP network. |
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What is an organisational unit?
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Objects (e.g. users) held within a domain are grouped into OU's.
OU's provide hierarchy to a domain and help ease its administration. |
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What is an active directory tree?
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AD framework that holds objects can be viewed at a number of levels.
Forest, tree and domain are logical divisions in an AD network. |
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What is the Global Catalog?
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A distributed data repository that contains a searchable, partial representation of every object in every domain in an AD forest.
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What is the role of a DNS server?
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DNS = Domain Name System
A hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities. Translates domain names to IP addresses needed for the purpose of locating computer services & devices worldwide. |
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What is the function of a DHCP server?
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Dynamic Host Configuration Protocol
Maintains a database of available IP addresses and configuration information. Determines the network to which the DHCP client is connected, and then allocates an IP address or prefix that is appropriate for the client, and sends configuration information appropriate for that client. Typically grant IP addresses to clients only for a limited interval. |
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What messages are passed between and DHCP server and a DHCP client? (DORAR)
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Client requests DHCP information: DHCPDISCOVER
DHCP server offers information to client: DHCPOFFER Client accepts DHCP server offer: DHCPREQUEST DHCP server acknowledges the client and leases the IP address: DHCPACK Client attempts to renew the lease: DHCPREQUEST, DHCPACK Client terminates the lease: DHCPRELEASE |
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How does group policy help in the management of the user environment?
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Group Policy controls what users can and cannot do on a computer system e.g. enforce a password policy.
Can control multiple computers at once meaning easy administration. Provides a means for ensuring consistent policy across the entire environment. Administrators can apply group policies to a set of users and computers located in a particular OU or the entire domain, from a centralized location. |
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List four types of malware.
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Viruses:
Trojan horse: A malicious program disguised as something normal, users willfully install without realizing. Rootkit: Prevents malware from being visible in the system's list of processes or keep its files from being read. Backdoor: A method of bypassing normal authentication procedures. Once compromised, one or more backdoors may be installed in order to allow easier access in the future. |
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List 3 main classes of intruder in a system and describe the behavior of each.
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Misfeasor: An individual who works within the scope of his privileges but misuses them.
Clandestine User: An individual who seizes supervisory control to disengage or avoid security mechanisms of the system such as audit and access controls. Masquerader: An individual who overcomes a systems access control to exploit a legitimate user's account. |
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Explain virus classification by target and concealment strategy.
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Target: A virus that infects specific files e.g. boot-sector infectors, executable file infectors, and data file infectors (a.k.a. macro viruses).
Concealment: Viruses which conceal themselves, both from users and from anti-virus software through encryption, stealth, oligomorphism (encryption key changes on a new infection) & polymorphism. |
