E0 192.168.93.1
S0 192.168.95.1
CertKing 2
E0: 192.168.97.1
S0: 192.168.101.42
S1: 192.168.95.2
CertKing 3
E0 to be determined
S1 to be determined
Secret password: CertKing
Click on the host icon that is connect to a router by a serial console cable to configure the router.Ans:
CertKing 3> enable
Password: CertKing
CertKing 3 # config terminal
CertKing 3 (config) # interface ethernet 0 (Shorthand: int e 0)
CertKing 3 (config-if) # ip address 192.168.101.17 255.255.255.240
CertKing 3 (config-if) # no shutdown
CertKing 3 (config-if) # exit
CertKing 3 (config-) # interface serial 1 (Shorthand: int s 1)
CertKing 3 (config-if) # ip address 192.168.101.33 255.255.255.240
CertKing 3 (config-if) # no shutdown
CertKing 3 (config-if) # CTRL+Z
CertKing 3 # copy running-config startup-config
Reference:
CCNA Self-Study CCNA ICND exam certification Guide (Cisco Press, ISBN 1-58720-083-X) Page 165
CCNA Self-Study CCNA INTRO exam certification Guide (Cisco Press, ISBN 1-58720-094-5) Page 486


Q62
What is the function of access control lists (ACLs)? (Choose all that apply.)A. Monitor the number of bytes and packets.B. Assume role off virus detector.C. Identify interesting traffic for DDR.D. IP route filtering.E. Provide high network availability.F. Classify and organizing network traffic.Ans: C, D

Explanation:
IP access control lists allow a router to discard some packets based on criteria defined by the network engineer.
The goal of these filters is to prevent unwanted traffic in the network - whether to prevent hackers from
penetrating the network or just to prevent employees from using systems they should not be using.
IP access lists can also be used to filter routing updates, to match packets for prioritization, to match packets for
prioritization, to match packets for VPN tunneling, and to match packets for implementing quality of service
features. It is also used to specify the interesting traffic, which is used to trigger ISDN and Dial on Demand
Routing (DDR) calls.
Reference:
CCNA Self-Study CCNA ICND exam certification Guide (Cisco Press, ISBN 1-58720-083-X) Page 427
Incorrect Anss:
A, F. ACLs do not provide for management and traffic analysis functions such as the monitoring and
organization of network packets.B. While ACLs can be used to filter out some unwanted traffic; they can not be used to routinely provide for
virus detection and removal.E. ACLs alone do not provide for any additional level of network availability.


Q63
What could you use to prevent rooting loops in the network when configuring the network using a
distance vector routing protocol? (Choose all that apply.)A. Spanning Tree ProtocolB. Shortest path first treeC. Link-state advertisements (LSA)D. Hold-down timersE. Split horizonF. VRRPAns: D E

Explanation:
Distance vector routing protocols use the rule of split horizons and hold down timers to prevent routing loops
after a topology change.
o Split horizon - the routing protocol advertises routes out an interface only if they were not learned from
updates entering that interface.
o Hold-down timer - After finding out that a router to a subnet has failed, a router waits a certain period
of time before believing any other routing information about that subnet.
Incorrect Anss:A. STP is used in bridged LANs to prevent bridging loops. It is a means for preventing loops at layer two, not
layer 3.
B, C. These are two of the mechanisms of Link State Protocols, not distance vector protocols.F. VRRP is the Virtual Router Redundancy Protocol, which is a standards based method similar to Cisco's
proprietary HSRP. Neither of these two methods deal with distance vector routing protocols.
Reference:
CCNA Self-Study CCNA ICND exam certification Guide (Cisco Press, ISBN 1-58720-083-X) Page 154


Q64
Which of the following features are PPP characteristics? (Choose all that apply.)A. Encapsulates several different types of routing protocols.B. Supports only IP.C. Can be used over analog circuits.D. Maps Layer addresses.E. Corrects errors.Ans: A C E

Explanation:
o PPP can be used on either type of line (dial or switched lines), because data-link protocols are designed
for point-to-point environment.
o PPP uses one LCP per link and one Control Protocol for each Layer 3 protocol defined on the link. If a
router is configured for IPX, Apple Talk, and IP on a PPP serial link, the router configured for PPP
encapsulation automatically tries to bring I the appropriate control protocols for each layer 3 protocol.
o Error recovery can be performed by the data-link protocol or a higher-layer protocol, or it might not be
performed at all. Supported but not enabled by default.
Incorrect Anss:B. PPP can be used to support any higher layer protocol, including IP, IPX, Appletalk, etc.D. PPP is an industry standard used in point to point data networks. The Cisco proprietary method that is
similar to PPP is HDLC.
Reference:
CCNA Self-Study CCNA ICND exam certification Guide (Cisco Press, ISBN 1-58720-083-X) Page 309