10: Which of the following protocols uses a three-way handshake mechanism to establish sessions?
( u/ ?: s* U4 N5 u1 g( @% H' D' J
0 F a Y2 U) G6 h A. TCP # o4 n7 |: O# B$ u1 G+ }2 r3 S3 A
0 c; P' A6 v* ^. Q B. IP 3 I8 R* o( ~" G d$ S
& v, p# T% @6 J& [3 [# |9 f8 I* e C. UDP
7 L0 j, f! |7 g$ G8 d+ T u) v% ]) n0 v- i" Y
D. IPX 1 X, B5 Z# u1 }9 O6 t$ Z7 \
5 `2 e7 u p% M, n% w! R+ A/ i
E. Frame relay : a, e V- h% r0 A8 f
9 h& i$ D7 E; X4 d. Q; T4 K
11: Which of the following protocols is connection-oriented?
1 A/ B8 o7 a* F& B" _; Y# R* X
& y2 r+ D5 s2 ?6 J3 B A. TCP * L# Z8 Y! O3 ^/ a
1 Y8 }6 I* {2 A# X2 I2 ]$ s
B. IP + { _/ m" Z7 o4 Z5 b* p! p
5 Z6 {! ~" L: u, S C. IPX
/ U2 o) c& w3 M. C# k9 m. \0 o/ b. K" W1 x% X! ~
D. Frame relay
( l9 s9 U$ f$ R/ D% c; Z ( q6 u& `7 `- q1 O5 L& P) }
12: You are using an application on your Windows 2000 client machines that provides error correction. You need a protocol to provide fast transport. Which protocol should your application use? 7 i$ i/ @1 p% n' N) R
) ? p5 o7 u( y: z T+ q A. TCP
3 [* u1 J9 \. ]
% w- h9 Z0 Z6 Q" O- y B. IP
% Y# e/ X( i3 ~8 K3 T9 s. `1 R0 v) q% T% Q
C. UDP ! b$ P. W" r/ J, L1 L8 l
' [& W4 H& Y s
D. SPX ' L/ Z! ]2 R: {9 y h9 N
* ]5 I1 j$ x4 k6 F8 \7 y; Z+ w E. AppleTalk ! m: I2 ?% ^4 @& u3 _
0 P6 v5 b& G5 l0 k+ G) @
13: When using TCP, after a session is open, the applications can adjust the number of segments they receive before sending an acknowledgment. This behavior is known as ______________. 6 i/ s* A4 k9 k$ Y4 |. _
8 E% i# n3 q4 b1 Q. M" @- H% e) @; ^ A. MTU adjustment
* V& l' [) ~4 W$ j+ _1 `2 d% B8 q6 i0 a
B. Windowing
0 n0 q) v4 t1 j. i( p% ~' ~* c
$ E; {6 `# P& \* u. W# m3 k C. Flexible Send Path ; P5 x E$ C% t8 n- F3 V+ s. n
6 [- P( @1 f+ ` D. FCS
7 V$ c' ^6 o8 s# N# H! z) E: F9 q" I : H4 f M h! h* S; u
14: If the destination did not receive a segment, how will the TCP host know to resend the information? - y0 ~1 E; z/ E& g: `& o' F
$ \+ \0 C# Z5 B' J
A. The ACK received will not include the segment number that was not received. * p0 z+ ?5 L8 o3 I& P
/ x/ ]9 H$ K8 |, j1 J
B. The ACK received will include the segment number that was not received. O7 W# y- h- e" v
2 m# F, N6 P+ W! M; m% d C. The sending host will send a PACK to verify segment receipt.
! F# V' X8 G$ [: L9 O @2 [/ r7 e6 K# p' P9 w
D. The destination host will send a YACK message back to the sending host. 5 G: P, i! `$ T$ F" g; q
$ Z7 v* R7 d/ G9 N- v! ]1 X" E
15: You are planning on using a single network that supports 208 users. Which IP address class would you choose to be the most efficient?
1 h) j2 T# s. l" v) _: {* T8 d
+ e/ G6 R$ ^1 O( ? Q A. Class A
! \9 a# x) h6 c: T! C9 p# s8 Q
B. Class B 1 q) d5 G0 I, _7 |* ~. Q
; c" b* @! h( b. u/ m C. Class C
- j9 d( ~: U1 | O# D6 R
- a0 `; F/ i$ Q' [9 H D. Class D
6 `8 Q. V! W8 X( ], x$ X7 k3 S+ O& h5 ?2 s: [/ Z9 P) E3 A- R9 b
E. Class E 0 }8 |- F9 y1 u5 |% C+ k
2 b# O. p9 P$ I2 p5 q& V 16: RFC 1918 defines the private IP address ranges. Which of the following IP addresses are considered part of these ranges? (Choose three.) 1 C/ ]; V9 N; |3 X( P4 c
8 z6 v7 w0 u6 c$ {" I8 \: o$ H) m A. 10.23.45.67 6 u; d* e$ l/ [
7 z6 M! C/ }$ |, E B. 126.21.34.56
3 B0 @9 M3 S' J# n* {* Y+ ~5 r3 y! d, x2 C, z" f6 V7 ^
C. 172.16.32.1 5 d5 i- q' `* O$ r7 L% A
& J. N' a* I# e+ ?5 Q! l
D. 172.31.234.55
; ~+ n1 C8 P3 C- u6 a& C7 Q" T Q, z/ [5 i3 F
E. 192.169.4.5
; f R8 y# c& T4 L4 d# p B6 _
+ ?0 r) a5 g, P/ Q" L3 }% Z, s 17: A new network is being designed for your company, Acme, Inc. If you use a Class C IP network, which subnet mask will provide one usable subnet per department while allowing enough usable host addresses for each department specified in the table?
& r+ R4 |. m( @$ S W$ Y" y2 X9 Z, {# g) v/ W* i+ i
Department * W- ?' z! e% z4 d
Number of Users
2 X' h8 m" \ {0 I: b % q% Z8 ?4 j8 _! F. j" e
Corporate
* @8 M" S9 ~9 s; E 7 & X Z7 c4 B' d2 J* O
. b' B7 V( _' \3 b1 R4 F+ L1 N" ]' f Customer Support
5 ~# A [& n2 t. I, r$ d 15
: a$ @. Y0 r. n9 M- s q : \+ W$ @& X+ q) Y9 e/ a3 j6 W9 t
Financial 6 m6 @; v2 i5 c4 L: G k
13 4 P8 W l& @( r5 \' F( e6 Y
8 Z3 u4 B) c5 U/ x* ?; s l HR
/ A, Q$ |7 L+ E1 {+ O( C6 O 7 ! R8 r5 n' c8 p( }9 s6 G
9 C+ ]5 G8 V5 Z- {
Engineering * T9 m: [0 v( K: N" I$ g' q& Y
16
3 m$ U' v9 L0 l+ L4 j' T# b d1 I+ d! R% p3 G6 a
A. 255.255.255.0 $ }. D! ~8 n: K1 s, C
8 R. s% ^# {- B, y9 ], X& z N0 e( Y
B. 255.255.255.192 7 k" ~1 N7 `$ k& m0 V+ z- O: Y! _
$ C+ W9 W9 O/ v/ ]. l P' o# p9 G
C. 255.255.255.224
$ S3 P: Z9 a$ a7 X% l# w! N
: i3 E [* n& y: L& w& l5 ^ D. 255.255.255.240
3 u! B S' p" J* Y
1 z8 G$ F, ?8 F! ?% ~ E. 255.255.255.248 |
发表于 2012-8-3 19:18:10
