cisco exams dumps

cisco exams dumps.An identity certificate is similar to a root certificate, but is used to describe a client and contains the public key of a single host (a single client). The client can be either a Secure Sockets Layer (SSL)-enabled web server or a router that uses digital signatures to authenticate VPN tunnels.In general, any device that verifies digital signatures must have the public key of the digital signature issuer. For example, suppose Batman and Robin wish to verify each other's identities, and both users trust the same CA, 3. X.500 and X.509V3 certificatesX.500 refers to a set of standards that focus on directory services and how directories are organized. Many common network operating systems are based on X.500, including Microsoft ActiveDirectory. o This X.500 structure is the basis for the content of common directory elements, such as CN=Batman (CN stands for common name), OU=engineering (0U stands for organizational unit), 0=epubit.com (0U stands for organizational unit), and 0=epubit.com (0U stands for organizational unit). epubit.com (0 for organization), etc., all of which are constructed in the form of an "organizational chart" (shaped like a pyramid). X.509V3 is the widely accepted standard for digital certificates, and contains many of the same directory and naming standards. Lightweight directory access6.3 PKI Basics 311Protocol (LDAP) is a general-purpose protocol that can be used to perform lookup functions within a directory. A common use of the protocol is for a user to first have a digital certificate that is used to perform authentication, and then access rights can be dynamically assigned to the user based on the details of the certificate (e.g., OU = salesin the certificate itself), so that access rights are linked to groups in the active directory or some other database that can be accessed through LDAP.LDAP-accessible groups in a database. The idea of this use is to define permissions somewhere and then utilize them repeatedly. Let's say setting up an active directory for the network and then using that directory to control the access rights that users have once they are authenticated.Most digital certificates will contain the following information (granted as a refresher).Serial number: assigned by the CA to uniquely identify the certificate. Subject: The person or entity to be identified. Signature algorithm: the specific algorithm used to sign the digital certificate.Signature: A digital signature from a certificate authority that verifies the authenticity of a certificate issued by that CA.Issuer: The entity or CA that created and issued this digital certificate. Valid from: The date when the certificate becomes effective. Valid until: The date when the certificate expires. Key use: The functions that can be exercised by the public key in the certificate.