Cisco Exam: CCIE Routing & Switching Written (Cisco Press)
Brush up on your knowledge of routing and switching networking theory for the CCIE R&S written exam with these 10 questions.
courtesy of Cisco Press
Question:
1. Assume a non-root 802.1D switch receives a Hello BPDU with the TCN flag set. Which STP setting determines how long the non-root switch waits before timing out CAM entries?
a. Hello timer setting on the Root
b. Maxage timer setting on the Root
c. Forward Delay timer on the Root
d. Hello timer setting on the non-root switch
e. Maxage timer setting on the non-root switch
f. Forward Delay timer on the non-root switch
2. Which of the following statements are true regarding features of SNMP based on the SNMP version?
a. SNMP Version 2 added the GetNext protocol message
b. SNMP Version 3 added the Inform protocol message
c. SNMP Version 2 added the Inform protocol message to SNMP
d. SNMP Version 3 expanded the SNMP Response protocol message so that it must be used by managers in response to Traps sent by agents
e. SNMP Version 3 enhanced SNMP Version 2 security features, but not other features
3. R11 and R12 (IP address 10.1.11.2) are connected to the same LAN segment. R11’s EIGRP Hold Time expires for neighbor R12. The exhibit shows R11’s topology information for subnet 10.1.1.0/24. Which of the following is true about R11’s first reaction to the loss of its neighbor R12?
R11#show ip eigrp topology
! lines omitted for brevity
P 10.1.1.0/24, 1 successors, FD is 1456
via 10.1.11.2 (1456/1024), FastEthernet0/0
via 10.1.14.2 (1756/1424), Serial0/0.4
a. R11 sends Updates to all neighbors poisoning its route to 10.1.1.0/24
b. R11 replaces the old route through 10.1.11.2 with the feasible successor route through 10.1.14.2
c. R11 sends Query messages to all other neighbors to ensure the alternate route through 10.1.14.2 is loop free, before using the route
d. R11 first Queries only neighbors on interface fa0/0 for alternative routes before Querying the rest of its neighbors
4. Which of the following statements are false regarding what routes a BGP router can advertise to a neighbor? (Assume no Confederations or Route Reflectors are in use.)
a. To advertise a route to an EBGP peer, the route cannot have been learned from an IBGP peer.
b. To advertise a route to an IBGP peer, the route must have been learned from an EBGP peer.
c. The NEXT_HOP IP address must respond to a ping command.
d. Do not advertise routes if the neighboring router’s AS is in the AS_PATH.
e. The route must be listed as valid in the output of the show ip bgp command, but it does not have to be listed as best.
5. Which of the following steps in the BGP decision process consider a larger value to be the better value?
a. WEIGHT
b. MED
c. Origin
d. IGP metric to reach the NEXT_HOP
6. Which of the following are reasons why WFQ might discard a packet instead of putting it into the correct queue?
a. The hold-queue limit for all combined WFQ queues has been exceeded.
b. The queue length for the flow has passed the WRED minimum drop threshold.
c. The WFQ queue length for the queue where the newly arrived packet should be placed has exceeded the CDT.
d. ECN feedback has been signaled, requesting that the TCP sender slow down.
7. Seven hosts and a router on a multicast LAN network are using IGMPv2. Hosts 5, 6, and 7 are members of group 226.5.6.7. Which of the following answers is/are true about how the router will respond when Host 7 sends an IGMPv2 Leave message for the group 226.5.6.7?
a. Sends an IGMPv2 General Query to multicast destination address 224.0.0.1.
b. Sends an IGMPv2 Group-Specific Query to multicast destination address 224.0.0.1.
c. Sends an IGMPv2 General Query to multicast destination address 226.5.6.7.
d. Sends an IGMPv2 Group-Specific Query to multicast destination address 226.5.6.7.
e. First, sends an IGMPv2 Group-Specific Query to multicast destination address 226.5.6.7 and then sends an IGMPv2 General Query to multicast destination address 224.0.0.1.
8. Which of the following are considered best practices for Layer 2 security?
a. Inspect ARP messages to prevent hackers from causing hosts to create incorrect ARP table entries
b. Enable Port Security
c. Put all management traffic in VLAN 1, but no user traffic
d. Configure DTP to use the “auto” setting
e. Shutdown unused ports
9. Why do you need a Wi-Fi router instead of an access point when installing a wireless LAN in a small office or home?
a. A router operates at a faster speed.
b. A router implements better security mechanisms.
c. A router will last longer.
d. The router implements DHCP and NAT.
10. Which of the following is true of route summarization?
a. OSPF can summarize routes only on ABRs and ASBRs
b. EIGRP summarization is configured with a router subcommand
c. RIPv2 summarization has the same features as EIGRP summarization, other than the syntax differences in the ip summary-address command
d. RIPv1 allows the ip summary-address command to be used
Answers
1. Answer C is correct.
2. Answers C and E are correct.
3. Answer B is correct.
4. Answers A, C and E are correct.
5. Answers A and B are correct.
6. Answers A and C are correct.
7. Answer D is correct.
8. Answers A, B and E are correct.
9. Answer D is correct.
10. Answer A is correct.
Questions and answers provided by Cisco Press from the book "CCIE Routing and Switching Official Exam Certification Guide, Second Ed.," (ISBN: 1587201410) published February 2006. To order the book, go here.
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