[offer] Jncis-es Preassessment Exam Q&a

Architecture of JUNOS Software with Enhanced Services
Compare and contrast JUNOS Software with Enhanced Services and traditional routing
Describe major components of JUNOS Software with Enhanced Services
Contrast session and flow
Compare and contrast packet flow of the first and consecutive packets of a flow
Name elements used in session recognition.
Describe session management process
Zone-based segmentation and monitoring
Describe the purpose of a zone
Identify the relationship between zones assignments, interfaces, and routing instances
Define zone types supported by JUNOS Software with Enhanced Services
Compare and contrast security and functional zones
List and identify the steps necessary to configure zones
Compare and contrast router’s behavior resulting from various configurations, when handling transit packets and packets destined to various interfaces of the router.
Demonstrate understanding of configuration precedence significance of various zone knobs.
Describe the traffic behavior based on a sample zone configuration
SCREENs
Identify advantages of using SCREENs
Compare and contrast reconnaissance, DoS, and suspicious packets attacks
Identify best practices to be used when implementing SCREENs
Configure SCREENs with necessary parameters based on threats
Security Policies
Identify the purpose of a security policy
Define the purpose of security policy configuration components
Configure appropriate JUNOS Enhanced Services security policies actions
Describe the purpose of an address book
Based on policy configurations, compare and contrast scheduled and non-scheduled policies
Based on policy configurations, describe the impact of security policy changes on session in progress
Identify and explain the importance of policy ordering in the configuration file
Identify and explain the importance of firewall and Web authentication
Campus Interconnectivity – NAT
Identify uses of NAT and PAT
Compare and contrast NAT/PAT types supported by JUNOS Software with Enhanced Services
Compare and contrast interface-based destination NAT and policy-based destination NAT
Compare and contrast source NAT using reverse mapping and source pool mechanisms
Identify types of NAT used, based on various NAT configurations
Describe the router’s behavior when using configuration file with source pool NAT and PAT
Campus Interconnectivity – IPSec VPN
Correlate between major security concerns and solutions
Compare and contrast symmetric and asymmetric key encryption
Describe the DH key exchange process
List methods for IPSec VPN setup
List specifics of Security Associations
Describe the IKE phases functionality and purpose
Compare and contrast policy-based and route-based IPSec implementations
Configure route-based and policy-based IPSec VPNs
HA
Describe JSRP cluster functionality
Identify JSRP-specific interfaces and their functions
Interface Configuration and Monitoring
Identify valid options for interface names, logical unit and protocol families within the JUNOS software
Identify MLPPP configuration options
Identify configuration options of VRRP
Identify MLPPP and VRRP monitoring options
Describe the information contained within the show interfaces extensive command
Routing
Describe route preferences
Given a routing table and packet header, identify the route that will be used for a particular packet.
Describe JUNOS software routing policy design considerations including: import and export, when to define routing policies, components of a routing policy (terms, match criteria, actions), default routing policy actions, and how routing policies are evaluated.
Describe the configuration of Static Routes
Describe OSPF area types and router types
Describe charecteristics of link-state routing protocols
System Services
Describe system logging and tracing
Configure a router to allow system services (SSH, Telnet, etc.)
Configure user authentication
Identify configuration and monitoring options for DHCP

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