IT 2640

1. Cut-through frame processing by a switch allows the switch to discard frames that fail the FCS check.
a) True
b) False

2. When a switch receives an Ethernet frame to a destination MAC address which is not in the devices
MAC address table the switch applies the following logic: ____________________.
a) Filters the Ethernet frame
b) Forwards the Ethernet frame up to the root bridge
c) Floods the Ethernet frame out all interfaces except the received interface
d) Transitions the received interface into blocking mode

3. Which of the following correctly describes the collision domain design trade-offs?
a) Single collision domain allows all devices to communicate at the same time
b) Single collision domain has no impact on efficiently of bandwidth utilization of the segment
c) Single collision domain requires all devices on a segment to share the available bandwidth
d) Single collision always maps to a single broadcast domain

4. When setting a local Cisco switchport to initiate the negotiation of a trunk link with the remote switch, the administrative mode is referred to as ________.
a) Access
b) Dynamic desirable
c) Dynamic auto
d) Trunk

5. Which component of IPv6 neighbor discovery replaces the capabilities of ARP?
a) Router announcement
b) Neighbor query
c) Router advertisement
d) Neighbor solicitation

6. Which type of UTP cabling is required to connect to hosts back-to-back?
a) Straight-through
b) Cross-over
c) Rolled
d) Cross-through

7. Which type of ICMP message will be returned to host by a remote router if that router does not have a route to a network?
a) Echo reply
b) Time exceeded
c) Destination Unreachable – Code Network unreachable
d) Redirect

8. Which Cisco IOS show command aids in the troubleshooting of routing protocols by displaying information on which protocol(s) is enabled and as well as passive interfaces?
a) Show ip route
b) Show ip interfaces
c) Show ip ospf relationships
d) Show ip protocols

9. IPv6 broadcast addresses are used in a similar manner to IPv4 broadcast addresses.
a) True
b) False

10. Inverse ARP in Frame Relay provides ________.
a) mapping of the Layer 3 address and the layer 2 address
b) mapping of the Layer 2 address to the leased line
c) mapping of the Layer 3 address to router hostname
d) mapping of Layer 2 address to a PVC

11. Which one of the following is an encapsulation type of Frame Relay LMI?
a) PPP
b) DLCI
c) 802.1Q
d) ANSI

12. Which one of the following summary routes correctly includes the subnets 99.1.0.0, 99.1.1.0,
99.1.2.0, and 99.1.3.0, mask 255.255.255.0 but does not include more prefixes than necessary?
a) 99.1.4.0/23
b) 99.1.0.0/16
c) 99.1.0.0/24
d) 99.1.0.0/22

13. Which one of the following OSPF neighbor states is the expected state after completion of the exchange of topology information?
a) Forwarding
b) Complete
c) Full
d) Exchange

14. When a bridge/switch receives a Ethernet frame into an interface, what does it do with the source
MAC address?
a) Utilizes it to determine the outgoing interface
b) Records the MAC address and incoming port to create the MAC address / interface table entry
c) Utilizes it for STP port state determination
d) Records the MAC address in order to build the IP routing table

15. Which VTP mode configures the switch to receive and forward VTP messages but does not use the
VTP messages to update the local VLAN database?
a) Server
b) Client
c) Proxy
d) Transparent

16. Which one of the following describes the forwarding logic followed by switch when it receives a frame destined to a MAC address that is in its MAC address table?
a) Floods frame out all interface except received interface
b) Changes incoming interfaces to STP forwarding state
c) Forward frame out interface specified in the MAC address table
d) Discards frame ARP entry is present

17. Which type of ICMP message will be returned to a host that is attempting to connect to a TCP port not utilized on a remote server?
a) Destination Unreachable - Code Host unreachable
b) Time exceeded
c) Echo reply
d) Destination Unreachable – Code Port unreachable

18. Configuring route summarization is the same configuration steps for all routing protocols.
a) True
b) False

19. Which type of OSPF area router connects two areas?
a) Backbone router
b) Internal router
c) Area border router (ABR)
d) Autonomous System router (ASR)

20. Which of the following is the MAC broadcast address for Ethernet?
a) 0000.0000.0000
b) F0F0.F0F0.F0F0
c) FFFF.0000.FFFF
d) FFFF.FFFF.FFFF

21. Which item needs to match before two OSPF routers can form a neighbor relationship?
a) Interface MTU
b) Cisco hardware model
c) Autonomous system number
d) OSPF process id

22. Which IP header field is reduced by one on a router before attempting to forward the IP packet?
a) ICMP
b) Port
c) Version
d) TTL