单项选择题X 纠错
A.ip sla 1 icmp-echo 1.1.1.1 tos 160
B.ip sla 1 icmp-echo 1.1.1.1 tos 20
C.ip sla 1 icmp-echo 1.1.1.1 precedence 5
D.ip sla 1 icmp-echo 1.1.1.1 dscp 20
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单项选择题
A.The phones are not sending traffic with the correct DSCP value.
B.The Cisco CallManager is not marking the traffic correctly.
C.This is most likely a bug on the CE routers.
D.Your LAN QoS is incorrectly configured.
单项选择题
A.routing issue
B.denial-of-service attack
C.MAC flooding
D.spanning-tree recalculation
E.Layer 2 loop
F.ARP spoofing attack
单项选择题
A. The switches are not the same model
B. You are not using the correct SFP
C. You are not using correct optical media converters
D. Configuration should be modified, because the distance is longer
多项选择题
A. Tunnel IPv6 over IPv4 to connect far-end IPv6 networks
B. Explain why configuring IPv4 and IPv6 at the same time over the same LAN interface is not possible
C. Explain why configuring IPv4 and IPv6 at the same time over the same LAN interface is possible
D. What is the meaning of EUI-64 and how does it work?
E. Tunnel IPv4 over IPv6 to connect far-end IPv4 networks.
单项选择题
A.NTP updates are sent in the timezone they are collected in,and the syslog server will adjust based on the input time.
B.NTP authentication verifies the source,not the recipient.
C.NTP authentication requires that the recipient has multiple strata clocks to ensure accuracy.
D.Secure NTP can be configured to use SHA-1 hashing,since NTP is very insecure.
E.A stratum 0 clock should be configured at the core of every network,so it can connect to an accuratetime source.
单项选择题
A. EtherChannel is only available in Cisco equipment.
B. The customer side is supposed to be running PAgP, which is a Cisco standard.
C. PAgP is not an IEEE standard. VRRP should be used.
D. The configuration on switch1 needs to be modified to use LACP.
多项选择题
A.LDAP
B.ICMP
C.RTP
D.BGP
E.SSH
F.RDP
多项选择题
A.When congestion is present,the priority command doesn’t allow exceeding the allocated rate
B.When congestion isn’t present,the priority command doesn’t allow exceeding the allocated rate
C.When congestion is present,the priority command allows exceeding the allocated rate
D.When congestion isn’t present,the priority command allows exceeding the allocated rate
单项选择题
A.qos-group
B.DSCP
C.LFI
D.NBAR
单项选择题
A. E0
B. E1
C. E2
D. E3
E. None of these interfaces will be used to successfully pass the RPF check.
F. All of these interfaces would successfully pass the RPF check.