CCNA（200-301）近期考试新题03

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0 l/ Z  P+ u  m& ?) E& k0 j% w1 A network engineer must create a diagram of a multivendor network.which command must
, R( n; @# x% abe configured on the Cisco devices so that the topology of the network can be mapped?
$ W2 c5 ]  L7 Y; g: f3 lA Device(config)#lldp run
2 j+ _( e: {5 Z# B5 G# y7 ^7 FB Device(config)#cdp run
C Device(config)# cdp enable
D Device(config)# flow-sampler-map topology

7 |- v- M1 b/ y( J. \( Y! Z2 How do TCP and UDP differ in the way they provide reliability for delivery of packets?
A TCP does not guarantee delivery or error checking to ensure that there is no corruption of data;
. ]) \5 `9 M/ u% E) J1 v* mUDP provides message acknowledgement and retransmits data if lost.
% S5 Z- r& o9 v6 x% g: S( [B TCP provides flow control to avoid overwhelming a receiver by sending too many packets at
once; UDP sends packets to the receiver in a continuous stream without checking for sequencing.
0 _" _+ [) x6 w% F9 l7 w. ZC TCP uses windowing to deliver packets reliably; UDP provides reliable message transfer
between hosts by establishing a three-way handshake.
D TCP is a connectionless protocol that does not provide reliable delivery of data; UDP is a
connection-oriented protocol that uses sequencing to provide reliable delivery.


  B! ~; W) T1 C& Q; X+ g; o7 J3 which command must be entered when a device is configured as an NTP server?
A ntp master
B ntp sever
C ntp authenticate
D ntp peer
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4 which two minimum parameters must be configured on an active interface to enable OSPFv2
" o2 M, p* X" a. [0 m- rto operate?(choose two)
- h0 d4 s- o4 u1 n, W4 z- ^5 IA IPv6 address
$ u  h! V0 x& \( K: d) DB OSPF process ID
C OSPF MD5 authentication key
D OSPF stub flag
E OSPF area

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5 What are two roles of the Dynamic Host Configuration Protocol (DHCP)? (Choose two.)
A The DHCP client maintains a pool of IP addresses it can assign.
B The DHCP server assigns IP addresses without requiring the client to renew them.
0 ]5 F  z$ N( f/ P1 H2 S  }C The DHCP client can request up to four DNS server addresses.
D The DHCP server offers the ability to exclude specific IP addresses from a pool of IP addresses
: ]' ~: G- \& G5 r2 ME The DHCP server leases client IP addresses dynamically
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9 @0 j. g0 F: V) s1 l& v8 U来源: CCNA（200-301）近期考试新题02

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