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本帖最后由 小乔 于 2020-5-26 09:07 编辑 ; y" R; T3 o, @; x* j3 _
& n5 `/ F/ V0 ]# n. A+ M$ e1 A network engineer must create a diagram of a multivendor network.which command must
# v) d+ D: X; u G( q9 n7 s8 Fbe configured on the Cisco devices so that the topology of the network can be mapped?2 L, |: \4 n K6 E; K. W. u
A Device(config)#lldp run( q+ |8 w$ E. p H0 o; U& F, v; x
B Device(config)#cdp run
2 B; v% D6 G1 D& ^# ZC Device(config)# cdp enable9 v# e4 O; Y3 A" P
D Device(config)# flow-sampler-map topology! R, c. |( l3 B) H& v6 L
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2 How do TCP and UDP differ in the way they provide reliability for delivery of packets?1 {, E0 @# W. v$ W! k
A TCP does not guarantee delivery or error checking to ensure that there is no corruption of data;7 C l% C) S2 ^* g; S5 X" u2 J6 { ~7 u
UDP provides message acknowledgement and retransmits data if lost.
. I; r8 p; E; o9 ^1 ^* uB TCP provides flow control to avoid overwhelming a receiver by sending too many packets at
0 t& \& z) }6 c4 f8 y) c; Monce; UDP sends packets to the receiver in a continuous stream without checking for sequencing.
& u+ X8 T# ]: j9 Q m6 mC TCP uses windowing to deliver packets reliably; UDP provides reliable message transfer
* h- I/ S- _8 w1 D+ v% ibetween hosts by establishing a three-way handshake.% Q: b: M1 ~0 h; @- ?4 [! y
D TCP is a connectionless protocol that does not provide reliable delivery of data; UDP is a
9 r6 }3 X0 i8 @# k& b7 ]$ P& oconnection-oriented protocol that uses sequencing to provide reliable delivery.
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3 which command must be entered when a device is configured as an NTP server?
; D8 t: A) X; d# DA ntp master0 `6 O: [' t) C! O* M- a
B ntp sever
& Q4 O, M8 W; D! E! z, o, zC ntp authenticate% a4 E" _2 ?- S; ^! p, U) W
D ntp peer' o$ [5 y; U9 Z Z1 `% m
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4 which two minimum parameters must be configured on an active interface to enable OSPFv2& B* D* a( Q# ^) `: G0 G
to operate?(choose two)2 m) `- n+ x# J% m3 ^' C0 v0 B; ]6 ~
A IPv6 address& w" |. @: M/ Y( K4 o8 V( @
B OSPF process ID
3 C$ b6 k$ _/ D1 }2 z! C3 j3 ]C OSPF MD5 authentication key
6 ~& j7 ~, o3 SD OSPF stub flag
6 h. B4 ^! z X! D3 }3 JE OSPF area# G" C3 C+ k" x8 |! u. ~1 }: N& R+ i
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* t/ M- ], F2 U; `- Z5 What are two roles of the Dynamic Host Configuration Protocol (DHCP)? (Choose two.)7 L [# r5 n2 {' _% A" o6 L% E) _
A The DHCP client maintains a pool of IP addresses it can assign.
f& L# a( p6 p% M* b7 H. XB The DHCP server assigns IP addresses without requiring the client to renew them.
7 |- l' R! c7 V+ u( O* l QC The DHCP client can request up to four DNS server addresses.$ s' t5 v, \+ W; ^
D The DHCP server offers the ability to exclude specific IP addresses from a pool of IP addresses# I- {- ^2 c7 B" s8 }& T
E The DHCP server leases client IP addresses dynamically
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来源: CCNA（200-301）近期考试新题02 |
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