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Cisco 640-821 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Cisco IOS Basics | - Basic device configuration - Show and debug commands - Command line interface (CLI) navigation |
| IP Addressing and Subnetting | - IPv4 addressing structure - Subnet masks and CIDR notation - Basic subnetting calculations |
| WAN Technologies | - PPP and Frame Relay basics (legacy) - WAN connection types |
| Network Security Basics | - Basic access control concepts - Device hardening overview |
| LAN Switching Technologies | - Switch operation and MAC address table - VLAN concepts - Trunking basics |
| Routing Fundamentals | - Routing table concepts - Static routing basics |
| Network Fundamentals | - Network topologies and components - LAN/WAN concepts - OSI and TCP/IP models |
Cisco Introduction to Cisco Networking Technologies Sample Questions:
A router receives a packet on interface 172.16.45.66/26. The source IP of the packet is
172.16.45.126/26 and the destination is 172.16.46.191/26. How will the router handle the packet?
- A. The destination is a broadcast address, so the router will not forward the packet.
- B. The destination is a network address, so the router will forward the packet.
- C. The destination is a host on the same subnet, so the router will forward the packet.
- D. The destination is a host on another subnet, so the router will not forward the packet.
Correct Answer: A 🗳️
A network administrator needs to create 29 subnetworks while maximizing the number of host addresses available on each subnet. How many bits must be borrowed from the host field of the network address to provide the required number of subnets with the most hosts per subnet?
- A. 7
- B. 2
- C. 5
- D. 3
- E. 6
- F. 4
Correct Answer: C 🗳️
Refer to the graphic. A network associate is planning to copy a new IOS image into the
Paden router. This new image requires 8 MB of flash memory and 32 MB of RAM. How will the IOS proceed with the copy process?
- A. During the copy process, the current IOS image will be erased.
- B. The current IOS image must be manually erased before IOS will allow the new image to be copied.
- C. IOS will issue an error message because flash memory is not large enough to hold the new image.
- D. The new IOS will be copied into flash memory and the current image will remain.
Correct Answer: D 🗳️
Which statements are true regarding ICMP packets? (Choose two.)
- A. They are encapsulated within IP datagrams.
- B. They can provide hosts with information about network problems.
- C. They guarantee datagram delivery.
- D. They acknowledge receipt of TCP segments.
- E. They are encapsulated within UDP datagrams.
Correct Answer: A,B 🗳️
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