單項選擇題What is the reason for configuring a passive interface on a router?（）

A. Allows interfaces to share common IP addresses.
B. Allows an interface to remain up without the aid of keepalives.
C. Allows a router to send routing and not receive updates via that interface.
D. Allows a routing protocol to forward updates that is missing its IP address.
E. Allows a router to receive routing updates on an interface but not send updates via that interface.


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1.多項選擇題Which of the following technologies can be used in distance vector routing protocols to prevent routing loops?（）

A. Spanning Tree Protocol
B. Shortest path first tree
C. Link-state advertisements (LSA)
D. Hold-down timers
E. Split horizon
F. VRRP

2.單項選擇題What parameters must you specify when you enable EIGRP routing?（）

A. The broadcast address, and AS number
B. The network number and AS number
C. EIGRP routing, network number and passive interface
D. EIGRP routing, network number, and AS

3.單項選擇題Which of the following answer choices is an additional parameter which must be supplied before the IGRP routing process can initialize?（）

A. Connected subnet numbers
B. Register administrative subnet masks
C. IP address mask
D. Autonomous system number
E. Metric weights

4.單項選擇題Which one of the following parameters is the very first thing that needs to be configured as part of the IGRP routing process?（）

A. The wild card mask
B. The IP address
C. The IP address mask
D. The metric weights
E. The Autonomous System number

5.多項選擇題Which of the following describe private IP addresses?（）

A. Addresses chosen by a company to communicate with the Internet.
B. Addresses that cannot be routed through the public Internet.
C. Addresses that can be routed through the public Internet.
D. A scheme to conserve public addresses.
E. Addresses licensed to enterprise or ISPs by an Internet registry organization.