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助理工程师
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发表于 2020-11-18 04:01:11
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QUESTION 19
6 C( ^4 W) r. _% z( TWhich two descriptions of AES encryption are true? (Choose two)4 w& j$ s F: O0 N1 E0 r+ |$ X
A. AES is more secure than 3DES.8 X! n& X4 E, z0 s9 U- k; s3 u
B. AES can use a 168-bit key for encryption.6 u2 R) \. e7 o3 |; @
C. AES can use a 256-bit key for encryption.- L& g1 h) T: L6 F- R8 ~! h
D. AES encrypts and decrypts a key three times in sequence.
) D" B% W+ u! J5 w4 k/ k4 z6 DE. AES is less secure than 3DES.# L; O7 H9 g+ f2 Y' `
Correct Answer: AC
) Q: H2 b Y l4 ?+ M/ |) X( k$ jQUESTION 20
2 x" h6 d. ~3 e8 C; zWhich algorithm provides encryption and authentication for data plane communication?1 G$ ^5 B# [, H+ T
A. SHA-968 R9 G: U4 s. v: o# d0 P
B. SHA-384
! e1 o x8 Z2 }! \4 B- |7 d% bC. AES-GCM) M& _3 z, V, \6 y
D. AES-256
" _5 B+ j3 t& {Correct Answer: C& u. l+ i1 d4 W& p+ |
QUESTION 21/ V( p! T) f* B3 ?" \) C
Which two key and block sizes are valid for AES? (Choose two)/ F' I* k* D2 U9 D, C
A. 128-bit block size, 192-bit key length' E2 ?" D4 C1 r: F' K
B. 128-bit block size, 256-bit key length
1 o/ F5 y3 ?2 Y; }- B' i7 [C. 64-bit block size, 168-bit key length
, T' U8 J8 }! r7 j& @D. 192-bit block size, 256-bit key length! l; r5 w, t4 o1 ~1 o7 i! K
E. 64-bit block size, 112-bit key length- b+ k7 C, L) O% u
Correct Answer: AB |
18#
2020-11-18 04:01:11
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