Match the following services with the correct descriptions:
A. BRI 1. Provides two 64 Kbps B channels
B. PRI 2. Provides 23 or 30 B channels
3. Provides one 16 Kbps D channel
4. Provides one 64 Kbps D channel
5. Provides a total bit rate of 2.048 Mbps
in Europe and Australia
6. Provides a total bit rate of 144 Kbps
7. Provides a total bit rate of 1.544 Kbps
in North America and Japan
What type of address is analyzed by a Layer 2 switch? A. network address B. MAC and network address C. Protocol type, MAC, and network address D. MAC address
In an ATM network, which type of device is in a LAN per ELAN (Emulated LAN)? A. LAN Emulation Workstation B. LAN Emulation Router C. LAN Emulation Server D. LAN Emulation Bridge
Which condition does not create LAN media problems? A. Protocol doesn?t scale well B. Long wait for the token C. Excessive collisions D. Too many devices
Diagramming application information flow is important because: A. it helps identify heavy traffic paths B. it helps figure out why email gets from one place to another C. it can tell you when to purchase a new router D. it can tell you when to purchase a new switch
You may receive a case study including Token Ring and Ethernet, so you may want to look at any constraints with cabling between Token Ring and Ethernet networks. Which statement describes the constraints imposed by the existing network? A. Replace all cabling B. Test all cabling C. Do not replace cabling D. Use microwave instead of cabling
What are the three commonly used methods of flow control used for handling network congestion? A. Buffering B. Source-quench messages C. Error checking D. Windowing
What are two differences between 10BaseT and 100BaseT? A. Speed B. Frame format C. Addressing D. Network diameter
How many networks will be advertised using route summarization within an OSPF network if you are given the following networks? 192.108.168.0 192.108.169.0 192.108.170.0 192.108.171.0 192.108.172.0 192.108.173.0 192.108.174.0 192.108.175.0 A. 1 B. 2 C. 3 D. 4 E. 5
A device has 2 synchronous ports, 16 asynchronous ports, and one ethernet port. What is this device most likely to be? A. CSU/DSU B. Access Server C. Multiplexer D. ISDN Terminal Adapter
How does the Spanning Tree Protocol (STP) prevent bridging loops? A. By not allowing any redundant paths within the network B. By calculating the metrics of each path C. By detecting and logically blocking redundant paths from the network D. By creating virtual LANS
When is the route to a node determined in an SRB (Source Route Bridging) Token Ring network? A. Before any data is transmitted B. After the data is transmitted C. During the transmission of data D. After the first frame is transmitted
Our company order a cisco ws-c3750x-48t-s(here i bought from http://www.3anetwork.com/cisco-ws-c3750x-48t-s-price_p104.html), As for the switch, in addition to the port module and optical module can be extended, what else module can also be extended?