A Class C network is defined by a:
A. 32-bit network prefix.
B. 24-bit network prefix.
C. 16-bit network.
D. 8-bit network.
What happens next after an incoming packet is de-encapsulated from the Layer 2 frame in a Nokia 7750 router?
A. The IP datagram is encapsulated in the appropriate Layer 2 frame by the MDA.
B. The IP datagram passes through the switch fabric to reach the egress IOM.
C. The IP datagram is passed to the IOM.
D. A lookup is performed in the FIB to determine the egress interface.
Which application below would be likely to use UDP?
A. Real-time audio application such as VoIP.
B. Web browser.
C. Email application.
D. Telnet.
SAPs may be a port, a port with a specific VLAN tag in the case of an Ethernet port, or a port with a specific Circuit ID in the case of ATM or Frame Relay.
A. True
B. False
Which of the following statements is FALSE when describing a Virtual Private LAN Service?
A. A VPLS emulates a virtual switch or bridge.
B. The VPLS performs MAC learning on MAC addresses seen from SAPs and SDPs.
C. When a VPLS receives a frame with an unknown MAC destination, the frame will be dropped.
D. MAC address forwarding database (FDB) is maintained for each VPLS.
Which ATM adaptation layer is usually used for connectionless data service?
A. AAL1
B. AAL2
C. AAL3/4
D. AAL5
Which of the following statements about IP addressing is TRUE?
A. IP addresses are assigned by IEEE to vendors.
B. Classless IP addresses provide hierarchy based on a variable length subnet mask.
C. Classless IP addresses provide hierarchy based on fixed subnet masks of /24, /16, and /8.
D. IP addresses provide hierarchy based on the country code and regional identifier.
How many subnets and host addresses are obtained by subnetting network 201.148.26.0/24 using a /26 subnet mask?
A. 4 subnets, 64 hosts per subnet
B. 8 subnets, 32 hosts per subnet
C. 4 subnets, 62 hosts per subnet
D. 8 subnets, 30 hosts per subnet
What next-hop address should router R2 use to reach a host on 192.168.2.0/24?
A. 10.2.3.2
B. 10.1.1.1
C. 10.2.3.1
D. 10.1.1.2
What is the purpose of the broadcast IP address?
A. To provide an address that refers to all the IP devices in a given subnetwork.
B. To provide an address that refers to a specific group of devices in a network.
C. To provide an address that refers to a group of devices having the same IP address in different Layer 2 domains.
D. To provide an address that refers to a single device on a given subnetwork.
