Information Technology Reference
In-Depth Information
12.
Cost savings, ease of understanding, easy network growth (scalability), and improved
fault isolation.
13.
IP phones reside in the building access layer of the campus infrastructure. The
CallManagers are placed in the server farm of the enterprise campus.
14.
i = C, ii = D, iii = B, iv = A
15.
False. Small campus networks can have collapsed core and distribution layers and
implement a two-layer design. Medium campus networks can have two-tier or three-
tier designs.
16.
Use the formula
n
(
n
- 1)/2, where
n
= 10. 10(10 - 1)/2 = 90/2 = 45 links.
17.
B. The distribution layer provides routing between VLANs and security filtering.
18.
E-commerce, Internet, VPN/remote access, and WAN.
19.
Internet services, WAN services, and PSTN services.
20.
Firewalls, Internet routers, FTP/HTTP servers, SMTP mail servers, and DNS servers.
21.
B. The VPN/remote access submodule contains firewalls, VPN concentrators, and
ASAs.
22.
D and E. The access layer concentrates user access and provides PoE to IP phones.
23.
B and C. The distribution layer concentrates the network access switches and routers
and applies network policies with access lists.
24.
A and F. The core layer provides high-speed data transport without manipulating the
data.
25.
D. The Campus Core connects to the server farm, the Enterprise Edge, and the
Building Distribution.
26.
E. The infrastructure at the remote site usually consists of a WAN router and a small
LAN switch.
27.
A, B, and C. Web, application, and database servers are placed in the e-commerce sub-
module.
28.
Block 4.
29.
Block 1.
30.
Block 6.
31.
Block 2.
32.
Block 5.
33.
Block 3.
34.
C. The Cisco Virtual Office supports the teleworker with router, VPN, and IP telephony.
35.
A and C
