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本帖最后由 小乔 于 2020-5-26 09:07 编辑
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1 A network engineer must create a diagram of a multivendor network.which command must
3 B' z; q; J: X4 y+ j/ Q5 sbe configured on the Cisco devices so that the topology of the network can be mapped?$ |7 d+ Y& y* p( Y4 i W9 b3 e' w
A Device(config)#lldp run! ^ s# S0 t3 b1 ^* `6 z1 b
B Device(config)#cdp run" V. t' [7 E* W' I9 }3 x6 G; D
C Device(config)# cdp enable
" n8 z) R, n$ e$ Y5 lD Device(config)# flow-sampler-map topology1 v+ ?- E* f% j& R
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2 How do TCP and UDP differ in the way they provide reliability for delivery of packets?
* x z% B" f+ p! [& i3 e5 YA TCP does not guarantee delivery or error checking to ensure that there is no corruption of data;8 J: i* ~3 j9 ?2 c9 y; ]6 ~( q6 p
UDP provides message acknowledgement and retransmits data if lost.
* z! d! q/ N" T) [& q3 o% O, m0 PB TCP provides flow control to avoid overwhelming a receiver by sending too many packets at. }6 ^ R$ P, S: w7 l
once; UDP sends packets to the receiver in a continuous stream without checking for sequencing.: O" u# h0 u' r; @2 G
C TCP uses windowing to deliver packets reliably; UDP provides reliable message transfer
`/ d2 p) ~ S; |between hosts by establishing a three-way handshake.
# j3 }& s# l/ i- P* N2 q. I4 }D TCP is a connectionless protocol that does not provide reliable delivery of data; UDP is a
1 ~' N, U E6 h9 f( X5 i; x. qconnection-oriented protocol that uses sequencing to provide reliable delivery.6 S8 k; G/ O2 c) z5 o
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2 d5 w5 {# s( X; Z3 which command must be entered when a device is configured as an NTP server?; ?" H1 y) p( H3 C" w
A ntp master3 q2 s: U5 C z$ e7 l. U. J
B ntp sever
" z0 `+ D6 T1 N9 x/ vC ntp authenticate! ?7 [1 J0 k" y/ W u0 L
D ntp peer
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4 which two minimum parameters must be configured on an active interface to enable OSPFv2/ R8 [& L: h6 g$ P% p ?
to operate?(choose two)
/ A- b: z5 t, U/ n8 nA IPv6 address
0 s- E2 ~! B4 c3 t% A4 P4 p! [B OSPF process ID8 K S, I9 i8 W5 K) e) s
C OSPF MD5 authentication key" `- L/ E' k: W9 S4 {6 n& [. a5 S
D OSPF stub flag2 M+ r, o- V' d( R0 I
E OSPF area0 E! Z$ \0 x3 _) l; s
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/ \. r% v* O* B- k$ V4 O% H, s5 What are two roles of the Dynamic Host Configuration Protocol (DHCP)? (Choose two.)7 s; r3 j9 S/ B/ O) S, D
A The DHCP client maintains a pool of IP addresses it can assign.
* z5 r* B1 u5 C9 w5 S8 pB The DHCP server assigns IP addresses without requiring the client to renew them.
g- E7 y7 H4 |5 A: T. [, @C The DHCP client can request up to four DNS server addresses.* x/ `3 X1 k# C4 w4 ~3 u
D The DHCP server offers the ability to exclude specific IP addresses from a pool of IP addresses& @7 h7 Z5 Y2 r/ j7 X* \' b
E The DHCP server leases client IP addresses dynamically& @6 w' d$ Q" @' r( J
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来源: CCNA（200-301）近期考试新题02 |
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发表于 2020-5-26 09:03:37
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发表于 2020-5-26 09:09:05
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