Cisco 200-301 Online Practice Questions and Exam Preparation

Cisco 200-301 Online Questions & Answers

• Question 171:

  What does a switch search for in the CAM table when forwarding a frame?

  A. source MAC address and aging time
  B. destination MAC address and flush time
  C. source MAC address and source port
  D. destination MAC address and destination port
  D. destination MAC address and destination port

  ---

  A switch searches for the destination MAC address and the destination port in the CAM table when forwarding a frame. The CAM table, or content addressable memory table, is a data structure that stores the MAC addresses of the devices connected to the switch ports and their associated VLANs. The switch uses the CAM table to make layer 2 forwarding decisions based on the destination MAC address of a frame. When a frame arrives at a switch port, the switch first learns the source MAC address and

  the source port of the frame and updates the CAM table accordingly. Then, the switch looks up the destination MAC address of the frame in the CAM table and finds the corresponding destination port. If there is a match, the switch forwards the frame out of that port only. If there is no match, the switch floods the frame out of all ports except the source port123.

  References:

  1: Why is the CAM table in a switch called CAM table and not MAC table even though it holds MAC addresses?

  2: ARP and CAM Table

  3: The CAM Table or MAC address Table

• Question 172:

  Refer to the exhibit. R1 learns all routes via OSPF

  Which command configures a backup static route on R1 to reach the 192.168.20.0/24 network via R3?

  

  A. R1(config)#ip route 192.168.20.0 255.255.0.0 192.168.30.2
  B. R1(config)#ip route 192.168.20.0 255.255.255.0 192.168.30.2 90
  C. R1(config)#ip route 192.168.20.0 255.255.255.0 192.168.30.2 111
  D. R1(config)#ip route 192.168.20.0 255.255.255.0 192.168.30.2
  C. R1(config)#ip route 192.168.20.0 255.255.255.0 192.168.30.2 111

  ---

  For this to be a backup route, we need to specify the AD of the static route to a value higher than the AD for OSPF routes, which is 110.

• Question 173:

  Which technique can you use to route IPv6 traffic over an IPv4 infrastructure?

  A. NAT
  B. 6 to 4 tunneling
  C. L2TPv3
  D. dual-stack
  B. 6 to 4 tunneling

  ---

  Overlay tunneling encapsulates IPv6 packets in IPv4 packets for delivery across an IPv4 infrastructure (a core network or the figure below). By using overlay tunnels, you can communicate with isolated IPv6 networks without upgrading the IPv4 infrastructure between them. Overlay tunnels can be configured between border devices or between a border device and a host; however, both tunnel endpoints must support both the IPv4 and IPv6 protocol stacks. IPv6 supports the following types of overlay tunneling mechanisms:

  1 Manual 2 Generic routing encapsulation (GRE) 3 IPv4-compatible 4 6to4 5 Intrasite Automatic Tunnel Addressing Protocol (ISATAP)

• Question 174:

  An administrator must secure the WLC from receiving spoofed association requests. Which steps must be taken to configure the WLC to restrict the requests and force the user to wait 10 ms to retry an association request?

  A. Enable Security Association Teardown Protection and set the SA Query timeout to 10
  B. Enable MAC filtering and set the SA Query timeout to 10
  C. Enable 802.1x Layer 2 security and set me Comeback timer to 10
  D. Enable the Protected Management Frame service and set the Comeback timer to 10
  D. Enable the Protected Management Frame service and set the Comeback timer to 10

  ---

  "You then need to specify the comeback timer and SA query timeout. The comeback timer specifies the time that an associated client must wait before the association can be tried again..." https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/212576-configure-802-11w-management-frame-prote.html

• Question 175:

  If a notice-level messaging is sent to a syslog server, which event has occurred?

  A. A network device has restarted.
  B. A debug operation is running.
  C. A routing instance has flapped.
  D. An ARP inspection has failed.
  C. A routing instance has flapped.

  ---

  Routing instance refers to the OSPF process, as in EIGRP or BGP they use Autonomous System (AS), which are similar to OSPF areas. Below, a deliberate failure was created in the OSPF adjacency with hello mishmash, with this we can see that we received logging messages level 5 Notice, referring to the failure in the routing instance of Process 10.

  R3(config-if)#ip ospf hello-interval 20

  %OSPF-5-ADJCHG: Process 10, Nbr 10.23.0.2 on GigabitEthernet0/1 from FULL to DOWN, Neighbor Down: Dead timer expired.

  %OSPF-5-ADJCHG: Process 10, Nbr 10.23.0.2 on GigabitEthernet0/1 from FULL to DOWN, Neighbor Down: Interface down or detached.

• Question 176:

  DRAG DROP

  Drag and drop the TCP and UDP characteristics from the left onto the supporting protocols on the right. Not all options are used.

  Select and Place:

  

  

• Question 177:

  What determines the sequence in which materials are planned during the material requirements planning (MRP) run?

  A. The control parameters of the MRP run
  B. The creation date of the materials
  C. The low-level code of the materials
  D. The replenishment lead time of the materials
  C. The low-level code of the materials

• Question 178:

  Which two circumstances can prevent two routers from establishing an OSPF neighbor adjacency? (Choose two.)

  A. mismatched autonomous system numbers
  B. an ACL blocking traffic from multicast address 224.0.0.10
  C. mismatched process IDs
  D. mismatched hello timers and dead timers
  E. use of the same router ID on both devices
  D. mismatched hello timers and dead timers
  E. use of the same router ID on both devices

• Question 179:

  Refer to the exhibit. Which two statements about the interface that generated the output are true? (Choose two.)

  

  A. learned MAC addresses are deleted after five minutes of inactivity
  B. the interface is error-diabled if packets arrive from a new unknown source address
  C. it has dynamically learned two secure MAC addresses
  D. it has dynamically learned three secure MAC addresses
  E. the security violation counter increments if packets arrive from a new unknown source address
  A. learned MAC addresses are deleted after five minutes of inactivity
  C. it has dynamically learned two secure MAC addresses

  ---

  Option B - wrong. only shuts int when violation mode is "shutdown"

  Option D - wrong. dynamically learned only 2 MACADD using sticky command

  Option E - wrong. only increments on "restrict" and "shutdown" violation mode

• Question 180:

  Refer to the exhibit.

  

  The loopback IP of R3 has been learned via the two interfaces on R1. R1 is configured with a reference bandwidth of 10 Gbps.

  Based on the metric calculations, which next hop IP would be used for outgoing routing?

  A. 10.12.0.5
  B. 10.12.0.2
  C. 10.12.0.1
  D. 10.12.0.6
  D. 10.12.0.6