本帖最后由 小乔 于 2020-5-25 09:21 编辑
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1 which IPv6 address block forwards packets to a multicast address rather than a unicast address?+ F9 P6 i5 k) y/ ?7 e& q
A. 2000::/3% T6 t( L# F) P8 `: A4 S% f
B. FC00::/7
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D. FF00::/12
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+ E' L4 r; H' m7 ?3 Q- b2 what is the expected outcome when an EUI-64 address is generated? A The seventh bit of original MAC address of the interface is inverted B The interface ID is configured as a random 64-bit value C The characters FE80 are inserted at the beginning of the MAC address of the interface D The MAC address of the interface is used as the interface ID without modification
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3 what is the difference regrading reliability and communication type between TCP and UDP? A TCP is reliable and is a connectionless protocol; UDP is not reliable and is a connection-oriented protocol. B TCP is not reliable and is a connectionless protocol; UDP is reliable and is a connection-oriented protocol. C TCP is reliable and is a connection-oriented protocol; UDP is not reliable and is a connectionless protocol. D TCP is not reliable and is a connection-oriented protocol; UDP is reliable and is a connectionless protocol. ( c/ @+ V3 X! U8 }# c) h) I9 b1 M, ?, I
4 Router R1 must send all traffic without a matching routing-table entry to 192.168.1.1.which configuration accomplishes this task? A R1# config t R1(config)# ip routing R1(config)# ip route default-route 192.168.1.1 B R1# config t R1(config)# ip routing R1(config)# ip route 0.0.0.0 0.0.0.0 192.168.1.1 C R1# config t R1(config)# ip routing R1(config)# ip route 192.168.1.1 0.0.0.0 0.0.0.0 D R1# config t R1(config)# ip routing R1(config)# ip default-gateway 192.168.1.1 + @" ?8 R- d5 D0 S* D
: H) } A* h$ }3 X. H) H& J" ~' S5 which function dose the range of private IPv4 addresses perform? A allow multiple companies to each use the same address without conflicts B provides a direct connection for hosts from outside of the enterprise network C ensues that NAT is not required to reach the internet with private range addressing D enable secure communications to the internet for all external hosts : u1 j- b+ g( C, P+ k5 H* e6 h
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