Marcos Avila
Quiz von , erstellt am more than 1 year ago

NSE4 6.0 NSE4 6.0 Quiz am Routing I, erstellt von Marcos Avila am 05/07/2018.

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Marcos Avila
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Routing I

Frage 1 von 16

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is how FortiGate in NAT mode decides where to send the packets that it receives and the packets that it generates. All network devices that perform routing have a routing table. A routing table contains a series of rules. Each rule specifies the next hop, which may or may not be the final destination of the packet. Each routing hop in the routed path requires a routing table lookup to pass the packet along until it reaches the final destination.

When routing packets, FortiGate will first find a matching route in its list of routes based on the packet's destination address. When performing this match, FortiGate evaluates the entire routing table to find the most specific match before selecting a route. If FortiGate finds multiple matches, it uses various route attributes to determine the best route. Proper routing configuration is important. If routes are misconfigured, packets will not reach their destination and will be lost.

Wähle eine der folgenden:

  • IP-Layer Routing

  • IP-Subnet Routing

  • IP-Routing Layer

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Frage 2 von 16

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For each session, FortiGate performs two routing lookups:

Wähle eine der folgenden:

  • For the first packet sent by the originator
    For the first reply packet coming from the responder.

  • For the first route sent by the originator
    For the first reply session coming from the responder.

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Frage 3 von 16

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FortiGate writes the routing information to its session table. Subsequent packets are routed according to the session table, not the routing table.

So, all packets that belong to the same session follow the same path, even after a change in the static routes.

However, there is an exception to this rule: if there is a change in the routing table, FortiGate removes the route information for the session table, and then it makes additional routing table lookups to rebuild this information.

Wähle eine der folgenden:

  • Route Lookup

  • IP-Layer Routing

  • Routing

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Frage 4 von 16

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Routing information is written to the session table

Wähle eins der folgenden:

  • WAHR
  • FALSCH

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Frage 5 von 16

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Dynamic routes: Fortigate Supports (select 4)

Wähle eine oder mehr der folgenden:

  • Routing information protocol (RIP)

  • Open Shortest Path First (OSPF)

  • Border Gateway Protocol (BGP)

  • Intermediate System to Intermediate System (IS-IS)

  • Enhanced Interior Gateway Routing Protocol (EIGRP)

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Frage 6 von 16

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Policy routes are in the same routing table by Fortigate, and have precedence over the regular routing table.

Wähle eins der folgenden:

  • WAHR
  • FALSCH

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Frage 7 von 16

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ISDB

Wähle eine der folgenden:

  • Internet Service Database

  • Internet System Database

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Frage 8 von 16

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Which configured routes aren‘t displayed in the routing table monitor?

Wähle eine der folgenden:

  • Inactive routes

    If an interface is down, or FortiGate does not have layer 2 connectivity to a subnet, that route is considered inactive, and will not be added to the routing table.

    Policy routes are viewed in a separate table. ISDB routes are also added as policy routes in the policy route monitor.

  • Directly connected subnets

    When a subnet is assigned to FortiGate's interface, a route to the subnet is automatically added with Connected shown in the Type column. There has to be layer 2 connectivity to the subnets for their respective routes to be added to the routing table. This means that if an interface is down, or there is no link established, the route will not be added.

    Dynamic routes

    On larger networks, your FortiGate may receive routes from other routers, through protocols such as BGP or OSPF. FortiGate will add these routes to the routing table with the respective routing protocol's name under the Type column.

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Frage 9 von 16

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Each route in the routing table has the following attributes: (Select 6)

Wähle eine oder mehr der folgenden:

  • Network

  • Gateway IP

  • Interfaces

  • DIstance

  • Metric

  • Priority

  • Policy id

  • Routing protocol

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Frage 10 von 16

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- directly connected
- DHCP gateway
- external BGP (EBGP) routes
- internal BGP (IBGP) routes
- OSPF routes
- RIP routes
- static routes

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Frage 11 von 16

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If multiple dynamic routes have the same distance, then metric is used to break the tie. The route with the lowest metric is chosen.

Wähle eins der folgenden:

  • WAHR
  • FALSCH

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Frage 12 von 16

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Used by static routes to dermine the best route to a destination, when the distance is the same.

Wähle eine der folgenden:

  • Priority

  • Distance

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Frage 13 von 16

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Priority route attibutes does not appear on the GUI routing monitor

Wähle eins der folgenden:

  • WAHR
  • FALSCH

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Frage 14 von 16

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If multiple routes to the same destination share the same distance, metric, and priority, they are all considered the best candidate. If the routes are static, OSPF, or EGP, FortiGate load balances the traffic across all routes.

Wähle eine der folgenden:

  • This is called equal cost multi-path (ECMP).

  • This is called Policy route

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Frage 15 von 16

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ECMP

Wähle eine der folgenden:

  • Equal cost multi-path

  • Equal cost multi-port

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Frage 16 von 16

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ECMP Methods (Select 4)

Wähle eine oder mehr der folgenden:

  • Source IP

  • Source-destination IP

  • Weighted

  • Usage (Spillover)

  • Per IP

  • Source Network

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