- (A) Layer 4 protocols
- (B) Layer 5 protocols
- (C) Layer 6 protocols
- (D) Layer 7 protocols
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- (A) tty ^c
- (B) stty intr \^c
- (C) stty echoe
- (D) stty echo \^a
- (A) sort
- (B) wc
- (C) grep
- (D) cat
- (A) fdisk
- (B) fsck
- (C) dd
- (D) rawrite
- (A) utilinux
- (B) cempre
- (C) switchdesk
- (D) window
- (A) path
- (B) pwd
- (C) prompt $p$g
- (D) dir
- (A) 128.10.2.30
- (B) 210.20.2.64
- (C) 164.100.9.61
- (D) 148.20.2.30
- (A) root
- (B) kara
- (C) group
- (D) user
- (A) patch
- (B) catch
- (C) .ch
- (D) All of the above
- (A) chmod 761 note
- (B) chmod 671 note
- (C) chmod 167 note
- (D) chmod 4=rwx, g=rw note
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