On a non-broadcast network, OSPF has two operating modes: NBMA and P2MP.
A. True
B. False
The virtual router uses a virtual MAC address but not the actual MAC address of the interface to respond to an ARP request.
A. True
B. False
A VRRP virtual router can have one or more IP addresses.
A. True
B. False
After the session is re-established between the BGP GR helper and its neighbor, original forwarding entries are deleted.
A. True
B. False
Which of the following statements about the master router in a VRRP backup group are true? (Choose three.)
A. It regularly sends VRRP packets.
B. It uses a virtual MAC address to respond to ARP requests sent from a virtual IP address.
C. It forwards an IP packet whose destination MAC address is a physical MAC address.
D. It changes to the Backup state if the priority carried in the received packet is greater than its own priority.
The reliability of a product or a system is generally evaluated with the two indicators of Mean Time to Repair (MTTR) and Mean Time Between Failures (MTBF).
A. True
B. False
During the GR of dynamic routing protocols (such as OSPF and BGP) neighbor relationships remain unchanged.
A. True
B. False
Complex traffic classification matches packets with rules and then takes actions to matching packets.
A. True
B. False
Which of the following technologies are available for traffic shaping? (Choose two.)
A. GTS
B. LR
C. CAR
D. WRED
Traffic shaping uses queues to cache traffic whose transmission rate exceeds the limit. Which of the following statement about traffic shaping is not true?
A. Compared with traffic policing, traffic shaping is advanced in terms of caching burst traffic.
B. With traffic shaping, packets can be transmitted at an even rate.
C. Caching packets in the queue increases the packet delay in case of congestion.
D. In case of congestion, traffic shaping causes the packet loss ratio to increase.
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