Which type of connection must be established before BGP peers can exchange update messages?（）A、SSLB、UDPC、TCPD、SSH

第1题：

第2题：

第3题：

第4题：

Which one of the following statements about BGP is FALSE?（）

• A、BGP uses TCP port 179.
• B、BGP ensures reliability of updates by using the reliable transport services of TCP.
• C、The network command with the mask option never insta lls a prefix into the BGP table unless there is a matching prefix exists in the IP route table.
• D、A TCP connection is required before exchanging updates.
• E、BGPuses notification and the update messages to establish and maintain the BGP neighbor relati onship.

正确答案:E

第5题：

Which attribute must exist in the BGP update packet?（）

• A、LOCAL_ PREF
• B、AGGREG ATOR
• C、AS_Path
• D、Weight

正确答案:C

第6题：

Once the TCP connection is established, which message type initiates the BGP peering process?（）

• A、Open
• B、Active
• C、Update
• D、Notification

正确答案:A

第7题：

You have been asked to develop an application that uses only connection-oriented protocols. Which two protocols can you use?（）

• A、PPP
• B、UDP
• C、TCP
• D、ICMP

正确答案:A,C

第8题：

By default, routes learned via IBGP will be announced to which peers?（）

• A、IBGP peers
• B、EBGP peers
• C、active BGP peers
• D、established BGP peers

正确答案:B

第9题：

Which choice describes the JUNOS software default policy action for BGP routes？（）

• A、IBGP peers
• B、EBGP peers
• C、Active BGP peers
• D、Established BGP peers

正确答案:B

第10题：

第11题：

第12题：

第13题：

第14题：

第15题：

In which state can BGP peers exchange Update messages？（）

• A、Active
• B、OpenSent
• C、OpenConfirm
• D、Established
• E、Idle

正确答案:D

第16题：

Which statement describes OTV configuration on the Cisco Nexus 7000 Series Switches？ （）

• A、 The OTV control-plane protocol uses the IS-IS protocol to establish adjacencies and exchange MAC reachability across the overlay network. You must enable IS-IS with the feature isis command before OTV adjacencies can be established.
• B、 OTV uses an SSM group range for neighbor discovery and to exchange MAC reachability with other OTV edge peers.
• C、 The OTV join interface is a routed uplink interface on the edge device used to physically join the overlay network.
• D、 The OTV internal interface encapsulates the site Layer 2 frames in IP unicast or multicast packets that are then sent to the other sites.

正确答案:C

第17题：

Which description of BGP authentication is true？（）

• A、MD5 has been used by BGP to encrypt BGP update packets.
• B、BGP uses a message-digest algorithm to authenticate BGP peers
• C、A plain-text password authentication is an option of BGP authentication
• D、EBGP peers authentication is faster than IBGP peers authentication
• E、BGP uses public key and private key to authenticate BGP peers.

正确答案:B

第18题：

By default， to which peers will a BGP router advertise routes learned from IBGP peers？（）

• A、all BGP peers
• B、all IBGP peers
• C、all EBGP peers
• D、all MBGP peers

正确答案:C

第19题：

You receive an EBGP route configured with the no-export community set.To which types of peers can you send this route?（） (Choose two.)

• A、no BGP peers
• B、all I-BGP peers
• C、all E-BGP peers within your global AS
• D、all E-BGP peers outside your global AS

正确答案:B,C

第20题：

Once the TCP connection is established, which message type initiates the BGP peering process?（）

• A、Open
• B、Active
• C、Update
• D、Keepalive
• E、Notification

正确答案:A

第21题：

You want to make use of the object features available in the database for the form module you are developing. Which three statements about object types are true? （）

• A、An object type is a user-defined composite data type. 
• B、The attributes of an object type can be those of other object types. 
• C、A PL/SQL table of records is an example of a nested object type. 
• D、An object type must be declared as a type before the actual object itself can be declared.

正确答案:A,B,D

第22题：

第23题：