CCNA Practice Questions (640-801)

The Building Scalable Cisco Certification exam is a qualifying exam for the CCNA certifications. The exam will certify that the successful candidate has important knowledge and skills necessary to use advanced IP addressing and routing in implementing scalability for Cisco routers connected to LANs and WANs. The exam covers topics on Advanced IP Addressing, Routing Principles, Configuring the EIGRP, Configuring the Open Shortest Path First Protocol, Configuring IS-IS, Manipulating Routing Updates, and configuring basic BGP.

1. Which of the following about Routing Protocols is correct? (choose all that apply)
1. RIP 2 is a Distance Vector Protocol
2. The RIP 1 uses bandwidth and delay as the metric
3. RIP 1 uses subnet mask
4. The holdown timer value for RIP is 240 sec
5. The Update timer value of IGRP is 90 sec

Answer :A & E
2. What command is used to delete the configuration stored in NVRAM?
1. erase startup-config
2. erase running-config
3. delete nvram
4. erase nvram

Answer :A
3. What is the maximum number of hops that OSPF allows before marking a network as unreachable?
1. 15
2. 16
3. 255
4. Unlimited
5. 99

Answer :D
4. Which routing protocol would allow a network administrator scalability, VLSM support and minimize overhead if the network administrator wants to merge different networks all using routers from multiple vendors?
1. VTP
2. RIP
3. IGRP
4. EIGRP
5. OSPF

Answer :E
5. Two routers Rtr1 and Rtr2 are both configured with RIP only. What will be the result when Rtr1 receives a routing update that contains a higher cost path to a network already in its routing table?
1. The update information will replace the existing routing table entry.
2. The update information will be added to the existing routing table.
3. The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence.
4. The update will be ignored and no further action will be taken.

Answer :E
6. Two routers Rtr1 and Rtr2 are both configured with RIP only. What will be the result when Rtr1 receives a routing update that contains a higher cost path to a network already in its routing table?
1. The update information will replace the existing routing table entry.
2. The update information will be added to the existing routing table.
3. The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence.
4. The update will be ignored and no further action will be taken.

Answer :E
7. What switching method examines the destination MAC address as the frame is being received and then begins forwarding the frame prior to receiving the entire frame?
1. Modified Cut Through
2. Store and Forward
3. Cut Through
4. Fragment Free

Answer :C

# Which protocol is used to look up an IP address from a known Ethernet address?

1. TCP
2. RARP
3. ARP
4. IP

Answer :B
# You need to troubleshoot a Cisco router at the Toronto office of How2Pass Inc. The router loses its configuration each time it is rebooted. You study the output displayed in the exhibit. What is the cause of the problem?
Exhibit:
----- output omitted ----
Cisco 2620 (MPC860) processor (revision 0x200) with 16384/2048K bytes of memory.
Processor board ID JAD05076EF6 (3878188963)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
2 Ethernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
2 Low speed serial(sync/async) network interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2142

1. There is insufficient RAM for the IOS image
2. The configuration register is misconfigured
3. There is insufficient flash memory
4. NVRAM failed POST
5. There is insufficient NVRAM

B
# If an Ethernet port on router was assigned an IP address of 172.16.112.1/20, what is the maximum number of hosts allowed on this subnet?

1. 2046
2. 8190
3. 4094
4. 4096
5. 1024

Answer :C
# The Frame Relay circuit between router A and router B is experiencing congestion. Which type of notification are used to alleviate the congestion? (Choose three)

1. DE
2. BECN
3. DLCI 100 is Down
4. CIR
5. FECN

Answer :D, B & A
# At which OSI layer does data translation and code formatting occur?

1. Network
2. Physical
3. Data link
4. Transport
5. Session
6. Presentation

Answer :F
# Which one of the following is a reason to use a hardware address?

1. To transmit a packet from one local device to another local device.
2. To transmit a frame from one interface to another interface.
3. To obtain a vendor code/serial number from the user.
4. To transmit data from one local device to remote device across Internet.
5. To contain logical information about a device to use an end-to-end transmission.

Answer :B