單項(xiàng)選擇題You work as a network engineer for the company, you want to configure two BGP speakers to form an EBGP session across a firewall. On the engineer’s network, the firewall always permits TCP sessions that are initiated from the inside network (the network attached to the inside interface of the firewall). What prerequisite is there for enabling BGP to run on this network?()

A.EBGP multihop will need to be configured for this to work.
B.This should work with normal BGP peering, with no additional configuration on the BGP speakers or the firewall.
C.The BGP protocol port must be opened on the firewall
D.There is no way to make BGP work across a firewall.


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1.單項(xiàng)選擇題Multi Protocol Label Switching (MPLS) is a data-carrying mechanism that belongs to the family of packet-switched networks. For an MPLS label, if the stack bit is set to1, which option is true?()

A.The stack bit will only be used when LDP is the label distribution protocol
B.The label is the last entry in the label stack.
C.The stack bit is for Cisco implementations exclusively and will only be used when TDP is the label distribution protocol.
D.The stack bit is reserved for future use.

3.單項(xiàng)選擇題You are configuring an 802.1Q trunk between a Layer 2 switch and a firewall. You read in the documentation that the best way to set up a trunk is to set the port as dynamic desirable. The trunk is not coming up. Which one of these options would be a valid explanation? ()

A.The firewall does not support Cisco Discovery Protocol. You should set the switchport trunk mode ON
B.The firewall does not support Cisco Discovery Protocol. You should set the switchport trunk mode to OFF
C.The firewall does not support Cisco Discovery Protocol. You should set the switchport trunk mode asauto.
D.The firewall does not support DTP. You should set the switchport trunk mode to ON

4.多項(xiàng)選擇題Which two of the following are considered valid router IDs for EIGRPv6? ()

A.0.0.0.1
B.0.255.0.1
C.2001:DB8::1
D.2001:DB8:ABCD:FEEF::1

6.多項(xiàng)選擇題Which two statements best describe spanning-tree BPDU processing for a blocking port?()

A.BPDUs that enter a blocking port are discarded.
B.BPDUs that enter a blocking port are processed.
C.Loopguard puts an interface into a loop-inconsistent state when BPDUs stop being received on a blocking port.
D.BPDUs are only processed on forwarding ports.

7.多項(xiàng)選擇題Which two statements best describe CBWFQ?()

A.The CBWFQ scheduler provides a guaranteed minimum amount of bandwidth to each class.
B.CBWFQ services each class queue using a strict priority scheduler.
C.The class-default queue only supports WFQ.
D.Inside a class queue, processing is always FIFO, except for the class-default queue.

8.多項(xiàng)選擇題Which two statements are true about the role of split horizon?()

A.It is a function used by routing protocols to install routes into routing table
B.It is a function that prevents the advertising of routes over an interface that the router is usingto reach a route
C.Its function is to help avoid routing loops.
D.It is a redistribution technique used by routing protocols

9.多項(xiàng)選擇題As a network engineer, you responsibility is to install, configure, operate, and troubleshoot networks. In your company’s network, EIGRP is the routing protocol. You have just discovered that two routers restarted the neighbor relationship.Why? ()

A.An update packet with init flag set from a known, already established neighbor relationship was received by one of the routers.
B.The counters were deleted.
C.The ARP cache was removed.
D.The IP EIGRP neighbor relationship was cleared manually.

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