CCIE系列認(rèn)證單項(xiàng)選擇題每日一練(2019.07.27)

A. O IA
B. O E1
C. O E2
D. O

A.The stack bit will only be used when LDP is the label distribution protocol
B.The label is the last entry in the label stack.
C.The stack bit is for Cisco implementations exclusively and will only be used when TDP is the label distribution protocol.
D.The stack bit is reserved for future use.

A.interface Ethernet0/0  I.pv6 traffic-filter NoULA out  I.pv6 access-list NoULA  Deny ipv6 FC00：：/8 any  Permit ipv6 any any
B.interface Ethernet0/0  I.pv6 traffic-filter NoULA out  I.pv6 access-list NoULA  Deny ipv6 FC00：：/7 anyP  ermit ipv8 any any
C.interface Ethernet0/0  I.pv6 access-group NoULA out  I.pv6 access-list NoULA  Deny ipv6 FC00：：/8 anyP  ermit ipv6 any any
D.interface Ethernet0/0  I.pv6 access-group NoULA out  I.pv6 access-list NoULA  Deny ipv6 FC00：：/7 any  Permit ipv6 any any

A. uses symmetric crypto for keys distribution
B. uses symmetric crypto for proof of origin
C. uses symmetric crypto for fast encrypted/decryption
D. uses asymmetric crypto for message confidentiality
E. uses symmetric crypto to transmit the asymmetric keys that is thenused to encrypt a session

A.Turning the laser to a specific ITU channel
B.Keeping the signal wavelength "locked" to a specific technology
C.Suppressing FWM and SBS non-linear effects
D.None ofthe above