思科认证考试
For best packet switching performance with crypto, what is the recommend packet switching path in a Cisco Teleworker Router?（）A、Process SwitchingB、Silicon Switching C、Cisco Express Forwarding (CEF) SwitchingD、Autonomous Switching
题目
For best packet switching performance with crypto, what is the recommend packet switching path in a Cisco Teleworker Router?（）
- A、Process Switching
- B、Silicon Switching
- C、Cisco Express Forwarding (CEF) Switching
- D、Autonomous Switching
相似问题和答案
第1题：
Which best represents a typical attackthat takes advantage of RFC 792， ICMPType 3 messages？（）
- A、 Blind connection-reset
- B、 Large packet echo request
- C、 Packet fragmentation offset
- D、 Broadcast-based echo request
- E、 Excessive bandwidth consumption
正确答案:A
第2题：
GPRS的英文全称为（）
- A、Global.Packet.Radio.Service
- B、General.Packet.Radio.System
- C、General.Packet.Radio.Service
- D、Global.Packet.Radio.System
正确答案:C
第3题：
Router VE1 has just received a packet and needs to route it. What two actions must this router take in order to route incoming packets? (Choose two)
A. Inspect the routing table to select the best path to the destination network addresses.
B. Validate sources of routing information.
C. Inspect the ARP table to verify a legitimate source MAC address for each packet.
D. Identify the destination network address of each packet.
E. Verify the receipt of routed packets by the next hop router.
F. Identify the source network address of each packet.
A,D 解析：Explanation:
The router decides how to forward an incoming packet by finding the routes that "match" the destination address of the packet, and then forwarding it according to the most narrowly applicable one.
A packet matches a route in the following way: a packet has (among other things) a destination address in its header, a route contains either a network or a host address, a network mask (netmask), and instructions on how to forward a packet using the route.
The packet matches the route if its destination address is part of the address subspace defined by the network address or exactly matches the host address of the route. A route is more narrowly applicable than another if the address subspace defined by its network address contains fewer actual addresses than the other, which is indicated by the netmask. An entry with a host address, rather than a network address, is the narrowest kind.
第4题：
Man-in-the-Middle类攻击可细分为（）。
- A、Packet capturing
- B、Packet alteration
- C、Packet injection
- D、Connection hijacking
- E、Packet insert
正确答案:A,B,C,D
第5题：
Refer to the exhibit. A router has a 256 kbps Frame Relay circuit connected to interface serial 0/0. As a large FTP packet is being placed into the hardware transmit queue of interface serial 0/0， a voice packet is placed into the priority queue of that interface. How， and in what order， wi the packets be transmitted？（）
- A、the voice packet will be transmitted first， followed by the FTP packet in its entirety
- B、the voice packet will be transmitted first， followed by the fragmented FTP packet
- C、the FTP packet will be fragmented and the voice packet will be interleaved
- D、the FTP packet will be transmitted first in its entirety， follow by the voice packet
正确答案:D
第6题：
What is the best description of serialization delay？ （）
- A、the time it takes for a Layer 3 switch or a router to switch a packet from an inbound interface to the queue of the outbound interface
- B、the time it takes for a propagate from source to destination
- C、the time it takes to place a frame on the physical medium for transport
- D、the time a packet resides in the outbound queue of a router
正确答案:C
第7题：
How does an IPv6 router deal with a packet that is larger than the outgoing interface MTU？（）
- A、It will fragment the packet at Layer 2.
- B、It will fragment the packet at Layer 3.
- C、It will drop the packet and send an ICMPv6 message "packet too big" back to the source.
- D、It will drop the packet.
正确答案:C
第8题：
Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE and IPsec tunnel, over the DSL connection, destined for an Enterprise network.Which of the following answers best describes the router‘s logic that tells the router, for a given packet, to apply GRE encapsulation to the packet?（）
A. When the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interface
B. When routing the packet, matching a route whose outgoing interface is the GRE tunnel interface
C. When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interface
D. When permitted by an ACL that was referenced in the associated crypto map
第9题：
Which two statements best describe Cisco IOS IP SLA？（）
- A、only implemented between Cisco source and destination-capable devices
- B、statistics provided by syslog， CLI， and SNMP
- C、measures delay， jitter， packet loss， and voice quality
- D、only monitors VoIP traffic flows
- E、provides active monitoring
- F、provides passive monitoring
正确答案:C,E
第10题：
What best describes processing delay？（）
- A、the time required from receipt of the incoming frame， until the frame/packet has been queued for transmission
- B、the time taken for a single packet to traverse the physical medium from one end to the other
- C、the time taken to place a frame on the physical medium for transport
- D、the time spent for a packet to reside in the output queue of a router
正确答案:A