A) alpha-numeric characters B) punctuation
C) special characters D) NULL
(66)There are two styles in the evolution of instruction set , that is CISC and
RISC. Which chip belongs to the CISC?( )。
A) SOAR B) VAX-11/780 C)CDC6600 D) IBM RTPC
(67)According to the principle of CRC calculation, given a frame-bit series
M=11100111 and the multiple-term formula, frame-bit series generated by the
CRC G=110011, then the CRC is ( )。
A) 111101 B) 00011 C) 11010011 D) 1101001
(68)The main goals of Networkare sharing computer resources .The resources include
hardware、data and ( )。
A) gateway B) router C) software D) server
(69)According to covering scope , which three classes can computer network be
divided ? ( )。
A)PSN、LAN、WAN B)MAN、LAN、WAN
C)PSN、FAST Ethernet、LAN D)PSN、FAST Ethernet、MAN
18
(70)In HDLC Protocol , when Supervisory Frame's type code is '00 '. About the
following statements , which is correct .( )。