On a P2P IS-IS network, after a neighbor relationship is established between R1 and R2, R2 finds that its LSDB is not synchronized. Then, R2 requests corresponding LSPs from R1 for LSDB synchronization. The following figure shows the synchronization process. Drag the following packet types to the steps in which they are used.(Token is reusable)

Correct Answer:

Explanation:
A screenshot of a computer Description automatically generated

Explanation of IS-IS Packet Types and Synchronization Process:
In the given scenario, R2 requests LSPs from R1 to synchronize its Link State Database (LSDB). The following IS-IS packet types are involved in this synchronization process:
1. P2P IIH (Point-to-Point IS-IS Hello):
* Purpose: Establishes and maintains IS-IS neighbor relationships.
* Step: This packet is exchanged initially to detect and maintain the adjacency between R1 and R2.
2. PSNP (Partial Sequence Number PDU):
* Purpose: Requests missing or outdated LSPs (Link State PDUs) from a neighbor to synchronize the LSDB.
* Step: In this case, R2 sends a PSNP to R1 to request the missing or outdated LSP.
3. LSP (Link State PDU):
* Purpose: Contains routing information and is used to update the LSDB.
* Step: R1 sends the requested LSPs to R2 for synchronization.
4. CSNP (Complete Sequence Number PDU):
* Purpose: Lists all LSPs in the sender's LSDB to help neighbors verify and request missing LSPs.
* Step: R1 sends a CSNP during retransmission timeout to notify R2 of its LSPs.

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When deploying a VRRP network, an enterprise administrator sets the virtual IP address to
192.168.1.254 and VRID to 1. Which of the following is the virtual MAC address after the network becomes stable?

• A.0000-5e01-0101
• B.0000-5e01-0254
• C.0000-5e00-0101
• D.0000-5e00-0254

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As shown in the figure, SW1 and SW2 have just run RSTP and are now performing spanning tree calculation.

So, which of the following descriptions about the port synchronization process in the P/A mechanism are correct? (Multiple choice)

• A.When the downstream port of SW2 is synchronized, the status of the AP port remains unchanged
• B.While each port is synchronized, SW2 will return the response RST BPDU with the Agreement bit set
• C.SW2 receives the RSTBPDU with the Proposal bit set from the root bridge, and starts to put all its ports into the synchronous state
• D.After the ports of SW2 are synchronized, all downstream ports enter the Discarding state

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NDP is a very core component of IPv6.
Which of the following items are functions of NDP? (Multiple choice)

• A.Router discovery
• B.Neighbor status tracking
• C.Geocoding
• D.Duplicate address detection
• E.Link shortest path calculation

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Which of the following attributes cannot be directly referenced in an apply clause of a route-policy?

• A.community
• B.IP-prefix
• C.tag
• D.origin

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