Which of the following statements regarding LSDB synchronization on an IS-IS broadcast network is true?
R2 functions as the DIS and sends Hello PDUs at an interval three times that of non-DIS routers.
R2 functions as the DIS and does not receive PSNPs from other routers.
R2 functions as the DIS and periodically sends CSNPs.
R1 and R3 maintain the LSDB consistency by sending PSNPs periodically.
The port shaping rate is set to 100 Mbps PIR, and the bandwidth of the service input and configuration of the interface is as follows. Then the first round of rotation, the assigned team What is the bandwidth?
30M
15M
90M
25M
After IS-IS area authentication is configured, which of the following ISIS packets will carry authentication information?
IS-IS Level-1 SNPs and LSPs
IS-IS Level-1 Hello PDUs
IS-IS Level-2 Hello PDUs
IS-IS Level-2 SNPs and LSPs
Which of the following statements regarding the Register message on a PIM-SM network are true?
The Register message is sent from a source DR
The Register message is sent to the RP in unicast mode
The Register message is sent from a receiver DR
The RP learns multicast source information from the Register message
The router acts as the HW1 MPLS LSR HW, and the router exists in the network of the carrier. The router receives a message with the tag. The item does not exist in its LFIB ? Then how does the router manage the text?
The router will use it to build a HW1 LDP LSP LFIB and create a new path in the Chinese
The router will abandon the text HW1 lose the newspaper
The router will forward the report using the modal HW1 tag.
The router will strip the HW1, FIB IP tags and find the destination address.
In inter-AS VPN Option B mode, two Autonomous System Boundary Routers (ASBRs) need to exchange public network LSP labels once during packet forwarding.
TRUE
FALSE
Routers HW1 and HW2 are IP Multicast routers. These routers use (S, G) entries for multicast packet forwarding. Which of the following address types are used in the āSā entry?
The block of administratively scoped multicast addresses
Source Specific multicast addresses
SDP/SAP addresses
Any class A, Class B, or Class C host address
GLOP addresses
A VXLAN tunnel can be established between two VTEPs and shared by all VXLAN network Identifiers (VNIs) between two NVE nodes.
TRUE
FASE
Which of the following statements regarding route import is false?
Importing IBGP routes into the OSPF process may cause routing loops.
By default, the metric of external routes imported into the OSPF process \s 1 and the type of imported external routes is Type 2.
BGP can generate routes in either Import or Network mode. The Network mode is more precise than the Import mode.
After IS-IS Level-2 routes are imported to an ISTS Level-1 area, routing loops occur if no route import policy is manually configured.
Which of the following statements regarding URPF, IPSG, and DAI are false?
IPSG checks the source IP addresses and source MAC addresses of IP packets, and DAI checks only the mapping between IP addresses and MAC addresses.
DAI binding entries cannot be manually configured.
URF can be used to defend against DDoS attacks from forged sources. checks IP packets to sources.
IPSG checks IP packet to defend against attacks using spoofed source IP addresses, and DAI checks ARP packets to filter out attacks sources.