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A router uses its () to detemine where to forward the packets.
A．domain name B．MAC address C．Frame ID D．routing table
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更多 “ A router uses its () to detemine where to forward the packets.A．domain name B．MAC address C．Frame ID D．routing table ” 相关考题
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以下删除记录正确的( )A.delete from emp where name='dony';B.Delete * from emp where name='dony';C.Drop from emp where name='dony';D.Drop * from emp where name='dony';
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What is the purpose of unicast reverse path forwarding?()
A. to validate packet receipt on interfaces where the traffic should be receivedB. to forward packets out the interfaces where the traffic should be receivedC. to forward packets out the interfaces where the traffic should be sentD. to validate packet receipt on interfaces where the traffic should be sent
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One type of frame switching uses low－latency forwarding and then switches to a higher－latency error checking mode when an error threshold is exceeded. What is the name of this frame switching mode?()
A. store and forwardB. fragment-freeC. adaptive cut-throughD. fast-forward
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Which two multicast protocol statements are true?()
A. Sparse mode multicast uses a pull model to send multicast traffic to where it is requestedB. Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted trafficC. Dense mode multicast requires explicit join messa ges from their membersD. Sparse mode uses reverse path forwarding (RPF) to prune off redundant flowsE. The primary use of sparse mode multicast is for test labs and router performance testing
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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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在J2EE中，对于标记，描述正确的是（）。 A、jsp：param是jsp：include、jsp：forward标记的子标记 B、如果aa.jsp有代码：jsp：forward page="next.jsp"jsp：param name="name" value="jb-aptech" //jsp：forward，则在next.jsp中可以使用request.getParameter（"name"）；把属性name的值取出来 C、如果aa.jsp有代码：jsp：forward page="next.jsp"jsp：param name="name" value="jb-aptech" //jsp：forward，则在next.jsp中可以使用request.getAttribute（"name"）；把属性name的值取出来 D、如果jsp：param标记不放在jsp：forward标记内，也就是不作为jsp：forward标记的子标记，则使用浏览器查看时会显示错误页面
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You have a Bridged 1483 service offering where each ATM PVC is assigned a /30 subnet. What are two characteristics of this configuration？（）A、It burns IP addresses.B、It conserves IP addresses.C、Both the client and the ERX Edge Router have IP addresses.D、The client has an IP address， but the ERX Edge Router uses an unnumbered address.
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An Enterprise rou ter, Ent1, displays the following excerpt from the show ip bgp command. ENT1 has an eBGP connection to an ISP router with address 3.3.3.3 and an iBGP connection to a router with address 4.4.4.4. Which of the following is most likely to be true?（） Network Next Hop Metric LocPrf Weight Path * 3.3.3.3 0 0 1 1 1 1 2 18 iA、The Enterprise likely uses ASN 1.B、The neighboring ISP likely uses ASN 1.C、The route has been advertised through ASN 1 multiple times.D、Router Ent1 will add another ASN to the AS_Path before advertising this route to its iBGP peer (4.4.4.4).
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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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One type of frame switching uses low-latency forwarding and then switches to a higher-latency error checking mode when an error threshold is exceeded. What is the name of this frame switching mode?（）A、store and forwardB、fragment-freeC、adaptive cut-throughD、fast-forward
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A router receives a packet on interface 172.16.45.66/26. The source IP of the packet is 172.16.45.127/26 and the destination is 172.16.46.191/26.How will the router handle the packet?（）A、The destination is a host on another subnet, so the router will not forward the packet.B、The destination is a host on the same subnet, so the router will forward the packet.C、The destination is a broadcast address, so the router will not forward the packet.D、The destination is a network address, so the router will forward the packet.
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Which of the following statements is true about a router's eBGP peers that is not also true about that same router's iBGP peers?（）A、The eBGP peer neighborship uses TCPB、The eBGP peer uses port 180 (default)C、The eBGP peer uses the same ASN as the local routerD、The eBGP peer updates its AS_Path PA before sending updates to this router
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What is the purpose of unicast reverse path forwarding?（）A、to validate packet receipt on interfaces where the traffic should be receivedB、to forward packets out the interfaces where the traffic should be receivedC、to forward packets out the interfaces where the traffic should be sentD、to validate packet receipt on interfaces where the traffic should be sent
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下列哪些SQL语句可以查询出User表中name为张三的记录（）。A、SELECT * FROM User WHERE name = ’张三’B、SELECT * FROM User WHERE name = ’张三’ LIMIT 0，1C、SELECT * FROM User WHERE name LIKE ’张三’D、SELECT * FROM User WHERE name LIKE ’%张三%’
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单选题You need to display the last names of those employees who have the letter "A" as the second character in their names.Which SQL statement displays the required results?（）A
SELECT last_name FROM EMP WHERE last_ name LIKE '_A%';B
SELECT last_name FROM EMP WHERE last name ='*A%'C
SELECT last_name FROM EMP WHERE last name ='_A%';D
SELECT last_name FROM EMP WHERE last name LIKE '*A%'
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单选题A person calls in asking for the name of the vendor that the technician uses for the organizations firewall hardware. Which of the following is the BEST action for the technician to take?（）A
Immediately forward the call to the vendor.B
Give the information to the caller.C
Hang up on the caller immediately and report the call to upper management.D
Politely refuse to give the information and end the call.
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单选题Which of the following statements is true about a router's eBGP peers that is not also true about that same router's iBGP peers?（）A
The eBGP peer neighborship uses TCPB
The eBGP peer uses port 180 (default)C
The eBGP peer uses the same ASN as the local routerD
The eBGP peer updates its AS_Path PA before sending updates to this router
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单选题Which SQL statement accepts user input for the columns to be displayed, the table name, and WHERE condition?（）A
SELECT 1, 2 FROM 3 WHERE last_name = '8';B
SELECT 1, '2' FROM 3 WHERE ' last_name = '8';C
SELECT 1, 2 FROM 3 WHERE last_name = '8';D
SELECT 1, '2' FROM EMP WHERE last_name = '8';
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单选题One type of frame switching uses low-latency forwarding and then switches to a higher-latency error checking mode when an error threshold is exceeded. What is the name of this frame switching mode?（）A
store and forwardB
fragment-freeC
adaptive cut-throughD
fast-forward
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单选题A router receives a packet on interface 172.16.45.66/26. The source IP of the packet is 172.16.45.127/26 and the destination is 172.16.46.191/26.How will the router handle the packet?（）A
The destination is a host on another subnet, so the router will not forward the packet.B
The destination is a host on the same subnet, so the router will forward the packet.C
The destination is a broadcast address, so the router will not forward the packet.D
The destination is a network address, so the router will forward the packet.
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单选题Examine the description of the EMPLOYEES table: EMP_ID NUMBER(4) NOT NULL LAST_NAME VARCHAR2(30) NOT NULL FIRST_NAME VARCHAR2(30) DEPT_ID NUMBER(2) Which statement produces the number of different departments that have employees with last name Smith? （）A
SELECT COUNT (*) FROM employees WHERE last _name='smith';B
SELECT COUNT (dept_id) FROM employees WHERE last _name='smith';C
SELECT DISTINCT (COUNT (dept_id) FROM employees WHERE last _name='smith';D
SELECT COUNT (DISTINCT dept_id) FROM employees WHERE last _name='smith';E
SELECT UNIQE (dept_id) FROM employees WHERE last _name='smith';
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多选题下列哪些SQL语句可以查询出User表中name为张三的记录（）。ASELECT * FROM User WHERE name = ’张三’BSELECT * FROM User WHERE name = ’张三’ LIMIT 0，1CSELECT * FROM User WHERE name LIKE ’张三’DSELECT * FROM User WHERE name LIKE ’%张三%’
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多选题You have a Bridged 1483 service offering where each ATM PVC is assigned a /30 subnet. What are two characteristics of this configuration？（）AIt burns IP addresses.BIt conserves IP addresses.CBoth the client and the ERX Edge Router have IP addresses.DThe client has an IP address， but the ERX Edge Router uses an unnumbered address.
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多选题Which two statements describe the difference between JUNOS Software for securityplatforms and a traditional router？（）AJUNOS Software for security platforms supports NAT and PAT； a traditional router does not support NAT or PAT.BJUNOS Software for security platforms does not forward traffic by default； a traditional router forwards traffic by default.CJUNOS Software for security platforms uses session-based forwarding； a traditional router uses packet-based forwarding.DJUNOS Software for security platforms performs route lookup for every packet； a traditional router performs route lookup only for the first packet.
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多选题Which two multicast protocol statements are true?（）ASparse mode multicast uses a pull model to send multicast traffic to where it is requestedBDense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted trafficCDense mode multicast requires explicit join messa ges from their membersDSparse mode uses reverse path forwarding (RPF) to prune off redundant flowsEThe primary use of sparse mode multicast is for test labs and router performance testing
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