Chapter 7

Question 1

What is a router?
A) A piece of hardware that forwards packets based on IP address.
B) A device that separates your computers from the internet.
C) A piece of hardware that distributes a single internet connection to multiple computers.
D) a synonym for a firewall.

Answer 1

A) A piece of hardware that forwards packets based on IP address.

Question 2

Routers must use the same type of connection for all routers, such as Ethernet to Ethernet or ATM to ATM.
A) True
B) False

Answer 2

B) False; a router can interconnect different Layer 2 technologies.

Question 3

What technology allows you to share a single public IP address with many computers?
A) Static Address Translation
B) Natural Address Translation
C) Computed Public Address Translation
D) Port Address Translation

Answer 3

D) Portal Address Translation, commonly known as PAT, enable you to share a single public IP address with many computers.

Question 4

Given the following routing table:
Destination - LAN IP - Subnet Mask - Gateway Interface
10.00.12.0 - 255.255.255.0 - 0.0.0.0 - LAN
64.165.5.0 - 0.0.0.0 - 0.0.0.0 - WAN
0.0.0.0 - 0.0.0.0 - 64.165.5.1 - WAN
Where would a packet with the address 64.165.5.34 be sent?
A) To the default gateway on interface WAN.
B) To the 10.11.12.0/24 network on interface LAN.
C) to the 64.165.5.0/24 network on interface WAN.
D) nowhere; the routing tables does not have a route for that address.

Answer 4

C) It would be sent to the 64.165.5.0/24 network on interface WAN.

Question 5

Dinstance vector routing protocols such as RIP rely on what metric to determine the best route?
A) Hop Count
B) Link Speed
C) Ping Time.
D) Routers are chosen at random.

Answer 5

A) hop Count - Distance vector routing protocols use Hop Count to determine the best route.

Question 6

What are two big advantages to using OSPF over RIP (Select Two)
A) OSPF is a modern portocol that does not have legacy problems.
B) OSPF chooses routes based on link speed, not hop count.
C) OSPF runs on all routers, big and small.
D) OSPF sends only routing tables changes reducing network traffic.

Answer 6

B and D. OSPF bases routes on speed and sends only route changes to minimize traffic.

Question 7

What is Area 0 Called in OSPF?
A) Local Area
B) Primary Zone
C) Trunk
D) Backbone

Answer 7

D. Area 0 is called the backbone.

Question 8

What is the name of the cable that you use to connect to the console port on Cisco routers?
A) Router console cable
B) Yost Cable
C) That funny blue Cisco cable
D) Null Modem Cable

Answer 8

B) You use Yost Cable, which was invented to standardize the serial console interface, to connect to the console port on Cisco routers.

Question 9

When you first setting up a new router, you should never plug it into an existing network?
A) True
B) False

Answer 9

A. True; Never plug a new router into an existing network.

Question 10

The traceroute utility is useful for?
A) Configuring routers remotely
B) Showing the physical location of the route between you and the destination
C) Discovering informaiton about the router between you and the destination address.
D) Fixing the computer’s local routing table.

Answer 10

C) The traceroute utility is useful for discovering information about the routers between you and the destination address.