1.Layer 6 of the 7-Layer OSI model is responsible for:
A. Common Data Compression and Encryption Schemes
B. Establishing, managing, and terminating communication sessions
C. Synchronizing communication
D. Determining resource availability
E. None of the above
ANSWER:A

2.What set of characteristics best describes Link-State routing protocols?
A. Fast convergence and lower CPU utilization
B. High CPU utilization and prone to routing loops
C. Slower convergence time and average CPU utilization
D. Fast convergence and greater CPU utilization
E. None of the above
ANSWER:D

3.Identify the TCP port numbers: 443, 389, 137, 110, and 23 in the proper sequence:
A. BGP, POP3, SNMP, TFTP, Telnet
B. LDAP, SNMP, TFTP, POP3, Telnet
C. HTTPS, SNMP, POP3, DNS, Telnet
D. Finger, DHCP Server, NetBIOS Name Server, POP3, Telnet
E. HTTPS, LDAP, NetBIOS Name Server, POP3, Telnet
ANSWER:E

4.What would occur as a result of the clear ip route * command being issued?
A. A router would recalculate its entire routing table and re-establish its neighbor relationships.
B. A router would recalculate its entire routing table but its neighbor relationships would not be affected.
C. Only link state routing protocols would be recalculated and only those neighbor relationships re-established.
D. Only its neighbor relationships would be re-established.
ANSWER:B

5.A customer has a Frame Relay network with 2 sites – a headquarters site and a remote site – with a single PVC connecting the 2 sites. The network is running RIP version II. The company is now expanding and adding another remote site in the Frame Relay network and has ordered a second PVC between the new remote site and the headquarters site. All Frame Relay interface IP addresses are in a single subnet. The customer configured Frame Relay DLCI mappings and can successfully ping from the new remote to the headquarters site as well as to the other remote site. However, the new router does not have a route in its route table to the other remote site’s LAN, and cannot ping the LAN interface or any hosts on that LAN.
What is most likely causing the problem?
A. Neighbor statements are not configured on the two remote sites, pointing to all other sites.
B. The headquarters site router has split-horizon enabled on the frame-relay interface.
C. The frame-relay IP to DLCI mappings are incorrectly configured.
D. RIP cannot propagate routing updates over a partial mesh frame-relay configuration, so another routing protocol should be selected.
E. Triggered updates should be configured on the headquarters router, to directly forward routing updates between the two remote sites.
ANSWER:B

6.A router running RIP Version II has 2 interfaces, and has received RIP routing updates from its neighbors on both interfaces. The first interface receives a routing update for network 10.1.1.0/24 with a metric of 3, the second interface also receives a routing update for network 10.1.1.0/24 with a metric of 5. Which interface(s) will the router select to forward packets to network 10.1.1.0/24?
A. The router will choose the first interface because it has the lowest metric.
B. The router will load share across both interfaces in a weighted fashion, sending the first 3 packets out of the first interface, and the next 5 packets out of the second interface.
C. The router will choose the second interface because it has the highest metric.
D. The router will equally load share packets across both interfraces in a round robin fashion, because both are valid RIP Version II routes.
E. The router will ignore the RIP metrics and compare the administrative distance of each route, and choose the interface with the lowest administrative distance.
ANSWER:A

7.The following access list has been applied to inbound traffic on the E0:
access-list 100 deny udp 0.0.0.0 255.255.255.255 10.1.1.5 0.0.0.0 eq 69
What does the access-list accomplish?
A. It blocks all incoming traffic arriving on E0 from accessing any FTP servers.
B. It blocks all incoming traffic, except traffic addressed to 10.1.1.5, from accessing any FTP servers.
C. It blocks all incoming traffic arriving on E0 from accessing the TFTP server with an address of10.1.1.5.
D. It blocks all incoming UDP traffic.
E. This access list is trying to block traffic from accessing a TFTP server. However, this is only half of what is needed to accomplish that. You would also need the following:
access-list 100 deny ftp 0.0.0.0 255.255.255.255 10.1.1.5 0.0.0.0 eq 69
ANSWER:C

8.A customer has a problem reaching hosts on a remote network. No dynamic routing protocol is running and it is using only default routes to reach remote networks. An extended ping is used on the local router and a remote file server with IP address 10.5.40.1 is pinged. The results of the ping command produce 5 “U” characters. What does the result of this command indicate about the network?
A. An upstream router in the path to the destination does not have a route to the destination network.
B. The local router does not have a valid route to the destination network.
C. The ICMP packet successfully reached the destination, but the reply from the destination failed.
D. The ping was successful, but congestion was experienced in the path to the destination.
E. The packet lifetime was exceeded on the way to the destination host.
ANSWER:A

9.A switch is running rapid spanning tree protocol. Upon a topology change, what happens to dynamic entries in the L2 forwarding table?
A. All entries are removed (purged)
B. Aging timer it set to 15 seconds, so idle entries age out
C. Only entries behind port where TC was received are removed
D. All entries are removed except for entries behind edge ports
E. All entries are removed except for those behind edge ports and the port where TC was received
ANSWER:E

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