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--- informatica:certificaciones:lpic:lpic-2:207_domain_name_server [2021/04/08 22:53] – creado tempwin
+++ informatica:certificaciones:lpic:lpic-2:207_domain_name_server [2021/05/11 19:06] (actual) – [Topic 207: Domain Name Server] tempwin
@@ Línea 2: / Línea 2: @@
 Perteneciente a [[informatica:certificaciones:lpic:lpic-2|LPIC-2]]
+Deberás poder configurar BIND para que funcione como un servidor DNS solo de almacenamiento en caché. Crear un archivo de zona para una zona de avance o retroceso y sugerencias para servidores de nivel raíz. Configurar un servidor DNS para que se ejecute como un usuario no root y se ejecute en una jaula chroot.
 Módulos:
-  * 207.1 Basic DNS server configuration (3)
+  * [[informatica:certificaciones:lpic:lpic-2:207_domain_name_server:207.1|207.1 Basic DNS server configuration]] (3)
-  * 207.2 Create and maintain DNS zones (3)
+  * [[informatica:certificaciones:lpic:lpic-2:207_domain_name_server:207.2|207.2 Create and maintain DNS zones]] (3)
-  * 207.3 Securing a DNS server (2)
+  * [[informatica:certificaciones:lpic:lpic-2:207_domain_name_server:207.3|207.3 Securing a DNS server]] (2)
+Lo importante de cara al examen:
+  * Localización de los ficheros de configuración y utilidades de sevidor BIND.
+  * Tipos de servidores DNS (master, slave, cache).
+  * Definición de zonas.
+  * Creación y modificación de ficheros de zonas directa e inversa.
+  * Uso de directivas allow-query/allow-transfer.
+  * Configuración Bind en chroot.
+  * Conocimiento de DNSSEC.
+  * Configuración y uso de firmas de transacción (TSIG).
+===== Tests =====
+**What is the purpose of a PTR record?**
+  * To provide name to IP resolution.
+  * To provide IP to name resolution. (**Solución**)
+  * To direct email to a specific host.
+  * To provide additional host information.
+  * To direct clients to another nameserver .
+**Using only commands included with named, what is the command, with options or parameters, to make named re-read its zone files?**
+  * ''rndc reload''
+**According to the configuration below, what is the e-mail address of the administrator for this domain?**
+<code>
+$TTL 86400
+$ORIGIN certkiller.com
+@    IN    SOA    mars.certkiller.com. hostmaster.certkiller.com. (
+                  2005020801
+
+
+
+);
+</code>
+  * ''hostmaster@certkiller.com''
+**The mailserver is currently called fred, while the primary MX record points to mailhost.example.org. What must be
+done to direct example.org email towards fred?**
+  * Add an A record for mailhost to fred's IP address.
+  * Add a CNAME record from mailhost to fred. (**Solución**)
+  * Add another MX record pointing to fred's IP address.
+  * Add a PTR record from mailhost to fred.
+Sería algo como:
+<code>
+fred    IN    CNAME    mailhost.example.org.
+</code>
+**DNSSEC is used for?**
+  * Encrypted DNS queries between nameservers.
+  * Cryptographic authentication of DNS zones.  (**Solución**)
+  * Secondary DNS queries for local zones.
+  * Defining a secure DNS section.
+  * Querying a secure DNS section.
+No se cifra la información, solo se firma para verificar la autenticidad.
+**The DNS service is used provide translation of IP addresses to names and is part of the TCP/IP standards that provide this type of functionality.**
+  * Verdadero (**Solución**)
+  * Falso
+**The primary configuration file for the BIND name service is located at /etc/named.conf.**
+  * Verdadero (**Solución**)
+  * Falso
+**The command 'dig@10.0.1.100 mylabserver.com' would provide what information?**
+  * None of the above
+  * All defined name servers for the 'mylabserver.com' domain
+  * All domain information for 'mylabserver.com' domain using the nameserver '10.0.1.100'  (**Solución**)
+  * All information pertaining to the names assigned to IP 10.0.1.100
+**The primary configuration file for client DNS queries is:**
+  * None of the Above
+  * ''/etc/nsswitch.conf''
+  * ''/etc/named.conf''
+  * ''/etc/resolv.conf '' (**Solución**)
+**What are the primary internet name servers called?**
+  * Backbone servers
+  * List servers
+  * Name servers
+  * Root servers (**Solución**)