IS IS

An administrator is configuring a new point-to-point link between two Junos routers running IS-IS. By default, how does IS-IS handle adjacency establishment on a point-to-point link compared to a broadcast link?

An engineer needs to influence the DIS election on a multi-access broadcast segment running IS-IS on Junos devices. Which configuration parameter and hierarchy should the engineer modify to guarantee a specific router wins the DIS election?

During the examination of IS-IS packet captures on a multi-access LAN interface, an engineer notices a specific PDU type being transmitted periodically by the Designated Intermediate System (DIS) to maintain synchronized link-state databases. Which PDU type performs this function?

An engineer needs to configure a Junos device to operate in an IS-IS routing domain where the router should connect both Level 1 and Level 2 areas, forming a boundary between them. Which configuration command under the [edit protocols isis interface] hierarchy correctly enables dual-level operations on the interface?

A network administrator troubleshooting an IS-IS adjacency issue notices that two routers are failing to form an adjacency over a point-to-point link. One router has wide metrics enabled globally, while the other router has wide metrics disabled and only supports narrow metrics. Which parameter or feature must be matching or handled for IS-IS link-state PDUs to be successfully processed between these neighbors?

A network engineer wants to verify IS-IS link-state database entries, specifically checking for TLVs that carry extended IP reachability information with wide metrics. Which Junos operational command should be used?

Which TWO characteristics describe the behavior and properties of Level 1 and Level 2 routing in IS-IS? (Choose two)

During an audit of an IS-IS routing network, an engineer examines the Type-Length-Value (TLV) structures used in IS-IS PDUs. Which TLV is specifically responsible for carrying IPv4 internal and external reachability information when using wide metrics?

Which command is used to verify the IS-IS adjacency state on a Junos device?

Which THREE statements are true regarding the Designated Intermediate System (DIS) election and its operational differences compared to OSPF's Designated Router (DR) election? (Choose three)

You have two routers connected via a point-to-point link. You need to ensure they form an IS-IS adjacency. Which configuration is required?

An engineer is troubleshooting IS-IS adjacency formation failures on a Junos device. Which THREE parameters must match or be compatible between neighboring routers to successfully establish an IS-IS adjacency? (Choose three)

You observe that an IS-IS adjacency is stuck in 'Initializing'. What is the most likely cause?

You are troubleshooting a DIS election issue on a broadcast segment. What is the tie-breaker if the DIS priorities are equal?

You have a Level 1/Level 2 router connecting two areas. How does it advertise itself to Level 1 routers?

You want to influence the path selection for IS-IS traffic. You decide to change the metric. Which TLV is used to carry wide metrics?

In a multi-access network, which PDU is responsible for the DIS election?

What is the default IS-IS metric for an interface in Junos?

What is the effect of changing the reference bandwidth in IS-IS?

When using authentication in IS-IS, where can you apply the password?

What happens if you have an LSP with an expired lifetime?

Why would you set an interface to 'passive' in IS-IS?

You are observing that your IS-IS routers are not synchronizing their databases. You check the CSNP settings. What is the role of the CSNP on a broadcast segment?

Which of the following is required for two routers to form a Level 2 adjacency?

Which of the following is a valid IS-IS PDU type?

How does a router determine its System ID?

What is the purpose of the 'lsp-lifetime' command?

Which level is enabled by default in Junos when configuring IS-IS on an interface?

How do you configure an interface to be point-to-point when using IS-IS?

You are configuring multi-topology IS-IS. What does this allow?

Which command allows you to view the IS-IS database summary?

What is the function of the DIS in an IS-IS broadcast network?

What happens if you have an area address mismatch in a Level 1 adjacency?

You need to redistribute OSPF routes into IS-IS. Where do you configure this?

What is the purpose of the 'lsp-generation-interval'?

Which TLV is used to carry IP prefixes in IS-IS?

How does an IS-IS router identify the DIS in its hello packets?

What does the 'show isis statistics' command reveal?

When should you consider increasing the 'csnp-interval'?

Which command displays the IS-IS interface parameters?

Which of the following are true regarding IS-IS Level 1/Level 2 routers? (Choose TWO)

What is the default behavior when an IS-IS router receives an LSP it already has?

Which of the following are valid IS-IS PDU types? (Choose THREE)

Which factors influence the DIS election on a broadcast link? (Choose TWO)

Which of the following are true regarding IS-IS authentication? (Choose TWO)

What are the consequences of a mismatch in metric style (narrow vs wide) between IS-IS neighbors? (Choose THREE)

Which of the following are valid IS-IS interface types? (Choose TWO)

Which actions occur during an IS-IS SPF calculation? (Choose THREE)

Which of the following are valid ways to influence path selection in IS-IS? (Choose THREE)

Which of the following scenarios would prevent an IS-IS adjacency from forming? (Choose TWO)

Which of the following are true about pseudonode LSPs? (Choose THREE)

What are valid ways to configure IS-IS on a Junos interface? (Choose TWO)

Which of the following are true about IS-IS Level-1 and Level-2 areas? (Choose TWO)

Which of the following are true regarding the IS-IS 'hello-interval'? (Choose TWO)

Which of the following are true about CSNP and PSNP? (Choose THREE)