Low Bandwidth Usage
High Memory Usage
Cisco Express Forwarding Routing Loop
High Bandwidth Usage
IP Route Interference
A tunnel can be established when a source the source interface is in the up/down state
A destination must be routable, but it can be unreachable
To establish a tunnel the source interface must be a loopback
To establish a tunnel the source interface must be up/up state
A tunnel destination must be a physical interface that is on up/up state
Show interface trunk
Show interface interface
Show ip interface brief
Show interface vlan
Show interface switchport
A backup route, stored in the topology table
A primary route, stored in the routing table
A backup route, stored in the routing table
Primary route, stored in the topology table
Show ip routes
Show ip eigrp summary
Show ip eigrp topology
Show ip eigrp adjacencies
Provides common view of the entire topology
Exchanges routing tables with neighbors
Calculates shortest path
Utilizes event triggered updates
Utilizes frequent periodic updates
In the routing table only
In the neighbor table only
In the topology table only
In the routing table and the topology table
In the routing table and the neighbor table
A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure
Broadcast storms can be mitigated by decreasing the number of broadcast domains, thus increasing their size.
A higher level of network security can be reached by separating sensitive data traffic from other network traffic
Port-based VLANs increase switch-port use efficient,thanks to 802.1Q trunks
A more efficient use of bandwidth can be achieved by allowing many logical networks to use the same network infrastructure
Broadcast storms can be mitigated by increasing the number of broadcast domains, thus reducing their size
VLANs make it easier for IT staff to configure new logical groups, because the VLANs all belong to the same broadcast domain.
Create a more specific static route to define how to reach the remote router.
Create a more specific ARP entry to define how to reach the remote router.
Save the configuration and reload the router.
Check whether the internet service provider link is stable
Encapsulation is mismatched
Frame Relay map is configured
DLCI is active
DLCI is inactive or deleted
An access list is needed to allow ping
The wildcard mask is incorrect
The OSPF area is wrong.
The OSPF process ID is incorrect.
The AS configuration is wrong.
Autonomous System Number
If authentication is used both: the key number, the password, and the date/time
The neighbors must be on common subnet (all IGPs follow this rule).
Configure each VLAN
The lowest IP address of any physical interface
The highest IP address of any physical interface
The lowest IP address of any logical interface
The highest IP address of any logical interface
Utilizing Syslog improves network performance.
The Syslog server automatically notifies the network administrator of network problems.
A Syslog server provides the storage space necessary to store log files without using the router disk space
Enabling Syslog on a router automatically enables NTP for accurate time stamping.
A Syslog server helps in aggregation of logs and alerts.
There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages.
Configuring one physical serial interface with Frame Relay to various remote sites.
Configure a loopback interface with Frame Relay to various remote sites.
Configuring multiple subinterfaces on a single physical interface to various remote sites.
Enabling split horizon.
Disabling split horizon
NAT protects network security because private networks are not advertised.
NAT accelerates the routing process because no modifications are made on the packets.
C. Dynamic NAT facilitates connections from the outside of the network.
D. NAT facilitates end-to-end communication when IPsec is enable.
NAT eliminates the need to re-address all hosts that require external access
F. NAT conserves addresses through host MAC-level multiplexing.
A VLAN number is incorrect
An ARP table entry is missing
A route is missing
An ACL is blocking the TCP port
They increase the size of collision domains.
They allow logical grouping of users by function
They can enhance network security
They increase the size of broadcast domains while decreasing the number of collision domains.
They increase the number of broadcast domains while decreasing the size of collision domains
They simplify switch administration.
A router must have a route towards the tunnel destination.
The router must have wccp redirects enabled inbound from the tunnel destination
The router must have cisco discovery protocol enabled on the tunnel to form a CDP neighborship with the tunnel destination
The router must have redirects enabled outbound towards the tunnel destination
Backbone area 0
RSTP cannot operate with PVST+.
RSTP defines new port roles
RSTP defines no new port states
RSTP is a proprietary implementation of IEEE 802.1D STP.
RSTP is compatible with the original IEEE 802.1D STP
DHCP messages where the source MAC and client MAC do not match
Traffic from a trusted DHCP server to client
DHCP messages where the destination MAC and client MAC do not match
They are always present in the NAT table
They allow connection to be initiated from the outside
They can be configured with access lists, to allow two or more connections to be initiated from the outside.
They require no inside or outside interface markings because addresses are statically defined.
Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface.
Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.
Configure many sub-interfaces on the same subnet.
Configure a single sub-interface to establish multiple PVC connections to multiple remote router interfaces.