FREE CCIE Routing And Switching Questions and Answers
What type of LSA's are blocked in the totally stubby area? (choose all that apply)
Please select 2 correct answers
In a totally stubby area, only LSA1 and LSA2 are allowed to propagate, while LSA3, LSA4, and LSA5 are blocked. LSA3 is a summary LSA generated by an ABR to advertise routes from outside the autonomous system (AS). LSA5 is an external LSA generated by an ASBR to advertise routes from other AS.
Since a totally stubby area is designed to reduce the size of the routing table and limit external routes, LSA3 and LSA5 are blocked to prevent unnecessary routing information from entering the area. In a totally stubby area, only LSA1 and LSA2 are allowed to propagate, while LSA3, LSA4, and LSA5 are blocked. LSA3 is a summary LSA generated by an ABR to advertise routes from outside the autonomous system (AS)
In frame relay what OSPF network type requires a neighbor statement?(choose all that apply)
Please select 2 correct answers
"The OSPF network types that require a neighbor statement in frame relay are broadcast and non-broadcast. In a broadcast network, OSPF routers can dynamically discover their neighbors without explicitly configuring them. However, in a non-broadcast network, such as frame relay, OSPF routers cannot automatically discover their neighbors.
Therefore, a neighbor statement must be configured to establish adjacency between OSPF routers in both broadcast and non-broadcast networks.
What is the adminitrative distance of EBGP route?
The administrative distance of a route is a measure of its trustworthiness or reliability. A lower administrative distance indicates a more preferred route. In this case, the correct answer is 20, which means that EBGP (External Border Gateway Protocol) routes have an administrative distance of 20.
This suggests that EBGP routes are considered very reliable and trustworthy, making them a preferred choice for routing decisions.
MQC is a combination of which queuing mechanisms?(choose 2)
"MQC (Modular QoS CLI) is a feature in Cisco IOS that allows for the configuration of quality of service (QoS) parameters on a network device. CBWFQ (Class-Based Weighted Fair Queuing) and PQ (Priority Queuing) are both queuing mechanisms that can be used with MQC. CBWFQ allows for the allocation of bandwidth to different traffic classes based on defined policies, while PQ gives priority to certain traffic classes over others.
Therefore, CBWFQ and PQ are the two queuing mechanisms that can be combined with MQC. The other options, Custom Queue, FIFO, and In/out, are not specific queuing mechanisms and are not compatible with MQC.
When redistributing rip into OSPF what routes get redistributed into OSPF(choose all that apply)
Please select 2 correct answers
When redistributing RIP into OSPF, the routes that get redistributed into OSPF are RIP routes and directly connected interfaces running RIP.
RIP routes are the routes learned through the RIP routing protocol, while directly connected interfaces running RIP are the interfaces that are directly connected to the router and are running the RIP protocol. The other options, static routes, floating routes, and null routes, are not included in the redistribution process.
What methods can be used to overcome IBGP full mesh requirement?(Choose Two)
Please select 2 correct answers
Route reflectors and confederations are two methods that can be used to overcome the IBGP full mesh requirement. 1. Route reflectors: In a full mesh IBGP network, every router needs to establish a direct BGP session with every other router. This can become impractical and difficult to manage in large networks.
Route reflectors address this issue by allowing routers to establish a BGP session with a selected set of route reflectors instead of every router in the network. The route reflectors then reflect the BGP updates to other routers, reducing the number of required BGP sessions. 2. Confederations: Similar to route reflectors, confederations also aim to reduce the number of required BGP sessions in large networks. In a confederation, the network is divided into smaller sub-autonomous systems, and each sub-autonomous system has its own internal BGP (IBGP) mesh. The sub-autonomous systems then establish external BGP (EBGP) sessions with routers in other sub-autonomous systems,
How are required for SSH on a router?
Please select 3 correct answers
The question is asking for three requirements for SSH on a router. The first requirement is the hostname, which is the unique name given to the router. The second requirement is the domain-name, which is the name of the domain to which the router belongs.
The third requirement is to generate an RSA public/private key, which is used for secure authentication and encryption in SSH. These three requirements are necessary for enabling and configuring SSH on a router. The question is asking for three requirements for SSH on a router. The first requirement is the host
What is the name given to the Firewall built into the Cisco IOS?
CBAC stands for Context-Based Access Control. It is a Feature built into the CISCO IOS firewall that provides advanced security capabilities. CBAC allows the firewall to inspect and control traffic based on the context of the connection, including the application layer protocols and state information.
It can dynamically open and close ports, keeping track of the state of the connection, and provides protection against various network attacks. CBAC is an important component of network security in Cisco devices and helps to prevent unaythorizes access and protect against potential threats
How can you only enable SSH connection on a Cisco Route for management?
The correct answer is "transport input ssh." This command allows only SSH connections for management on a Cisco router. By specifying "ssh" as the only transport input method, other methods such as telnet or HTTP are disabled, ensuring that only SSH connections are allowed for remote management of the router.
The correct answer is "transport input ssh." This command allows only SSH connections fo
How can summarization be done in OSPF? (choose all that apply)
Please select 2 correct answers
Summarization in OSPF can be achieved through the use of "area range" and "summary address". The "area range" command allows the aggregation of multiple subnets into a single summary route within an OSPF area. This helps in reducing the size of the routing table and improving network efficiency. Similarly,
the "summary address" command can be used to summarize routes at the boundary between OSPF areas, allowing for efficient routing and reducing the number of entries in the routing table. Summarization in OSPF can be achieved through the use of "area range" and "summary address". The "area range" command allows the aggregation of multiple subnets into a single summary route within an OSPF area.
How can you disable logging on the console of a router?
To disable logging on the console of a router, the command "no logging console" can be used. This command turns off the logging feature specifically for the console interface.
Ny using this command, log messages will no longer be displayed on the console, providing a more streamlined and less cluttered console interface.