單項(xiàng)選擇題You are deploying two core switches, one in each building, 50 km away from each other. The cross-connection between them will be a Layer 2 2-gigabit EtherChannel with an 802.1Q trunk. You configured it correctly but the link does not come up. The port is in the "admin up" state, and the line protocol is in the "down" state. The fiber link is OK. What would be the most likely reason for the link not to come up? ()

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


您可能感興趣的試卷

你可能感興趣的試題

1.多項(xiàng)選擇題Your company is researching a new application that runs over IPv6, but part of it must still have IPv4 support. Your company uses a traditional IPv4 network. Your plan is not to run IPv6 over the whole network, but to segment parts of the network or even to operate simultaneously with IPv6 and IPv4. You must make a brief presentation about IPv6 technology to the board of technical directors. Which three of these items could be part of your presentation? ()

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.

2.單項(xiàng)選擇題What is a characteristic of Network Time Protocol?()

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.

3.單項(xiàng)選擇題

Refer to the exhibit. You are setting up a 2-gigabit EtherChannel. Following IEEE standards, the exhibit shows your configuration in a local switch1. However, EtherChannel is not coming up. Which one of these statements could be a possible reason?()

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. 

5.多項(xiàng)選擇題Which two statements are true about bandwidth guarantee?()

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

最新試題

The classic Spanning Tree Protocol (802.1 D 1998) uses which sequence of variables to determine thebest received BPDU?()

題型:單項(xiàng)選擇題

How does an IPv6 router deal with a packet that is larger than the outgoing interface MTU?()

題型:單項(xiàng)選擇題

All of these are fundamental building blocks of differentiated services Traffic Conditioner Block exceptwhich one?()

題型:單項(xiàng)選擇題

Which of these best describes the actions taken when a VTP message is received on a switch configuredwith the VTP mode "transparent"?()

題型:單項(xiàng)選擇題

An expanding company is deploying leased lines between its main site and two remote sites. Thebandwidth of the leased lines is 128kb/s each,terminated on different serial interfaces on the main router.These links are used for combined VOIP and data traffic. The network administrator has implemented a VOIP solution to reduce costs,and has therefore reserved sufficient bandwidth in a low latency queue oneach interface for the VOIP traffic. Users now complain about bad voice quality although no drops areobserved in the low latency queue. What action will likely fix this problem?()

題型:單項(xiàng)選擇題

Which command is used to enable SSM with the range 232.0.0.0 - 255.0.0.0?()

題型:單項(xiàng)選擇題

You are the network administrator of an enterprise with a main site and multiple remote sites. Your networkcarries both VOIP and data traffic. You agree with your service provider to classify VOIP and data trafficaccording to the different service RFCs. How can your data and VOIP traffic be marked?()

題型:單項(xiàng)選擇題

What is the command to configure RSVP to reserve up to one-tenth of a Gigabit link,but only allow eachindividual flow to use 1 MB/s?()

題型:單項(xiàng)選擇題

Which two statements are true about RED?()

題型:多項(xiàng)選擇題

Which three message types are valid PIMv2 message types?()

題型:多項(xiàng)選擇題