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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
' [- G& q: l g8 d% [6 x3 J% Vbe configured on the Cisco devices so that the topology of the network can be mapped?5 v/ i. S7 z5 e
A Device(config)#lldp run7 b$ j7 s, |, {
B Device(config)#cdp run
( C8 f, }3 V0 T% \8 E* gC Device(config)# cdp enable/ O' o* {4 H$ b3 F0 E. C* w
D Device(config)# flow-sampler-map topology. k' S9 {- i9 t$ W r5 S7 f; |8 ?
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2 How do TCP and UDP differ in the way they provide reliability for delivery of packets?2 N, W7 r$ X [+ h. H8 N9 r7 H
A TCP does not guarantee delivery or error checking to ensure that there is no corruption of data;6 D/ X7 `8 m5 j9 Y
UDP provides message acknowledgement and retransmits data if lost.
- ], j, @: A( D: pB TCP provides flow control to avoid overwhelming a receiver by sending too many packets at& r1 P6 I+ z5 u% L) H# D3 n
once; UDP sends packets to the receiver in a continuous stream without checking for sequencing.
% Q& z+ ?. }2 b+ z) VC TCP uses windowing to deliver packets reliably; UDP provides reliable message transfer
2 E% a/ A v2 w: E. p% V: Q3 F5 nbetween hosts by establishing a three-way handshake.( \: b% ~5 {1 s4 [6 G Y
D TCP is a connectionless protocol that does not provide reliable delivery of data; UDP is a9 W6 n a: G1 }( u3 c
connection-oriented protocol that uses sequencing to provide reliable delivery.
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2 Y, ?/ i1 u8 r3 which command must be entered when a device is configured as an NTP server?
- o4 o& X' E! lA ntp master
/ u. [$ y$ B/ zB ntp sever! C/ O7 t+ |/ R4 m
C ntp authenticate
7 L5 M3 r. ~" X$ d' ]D ntp peer. [: X' g9 i$ m* i
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4 which two minimum parameters must be configured on an active interface to enable OSPFv2* O" C# e4 C, x3 E" w* k
to operate?(choose two)4 r4 \9 O6 D5 |- m8 S
A IPv6 address& ` _- Q1 P2 ]' B
B OSPF process ID
- V' v$ l- W5 b# J, v* @C OSPF MD5 authentication key
$ l( ~8 t" ~# {4 SD OSPF stub flag
8 ^3 \4 a/ n# x6 FE OSPF area2 l$ g& a5 Z6 {. f5 X+ ]. w
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( f6 n3 n5 {( o+ f5 e0 u5 What are two roles of the Dynamic Host Configuration Protocol (DHCP)? (Choose two.)
% J: g1 E6 Q0 G7 `# ?A The DHCP client maintains a pool of IP addresses it can assign.
: I( |4 v6 C& V" t" J" {B The DHCP server assigns IP addresses without requiring the client to renew them.
2 q/ F4 T1 d, u! m% {- N7 P5 [C The DHCP client can request up to four DNS server addresses.
( L. \% O! Z! e' Y2 k* CD The DHCP server offers the ability to exclude specific IP addresses from a pool of IP addresses
% t6 e8 k! V4 s, _ {- E- @E The DHCP server leases client IP addresses dynamically3 }/ ~% G" [& A- I9 @
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来源: CCNA（200-301）近期考试新题02 |
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